{"id":823,"date":"2012-07-31T22:18:39","date_gmt":"2012-07-31T14:18:39","guid":{"rendered":"http:\/\/notes.zerobox.org\/?p=823"},"modified":"2012-07-31T22:18:39","modified_gmt":"2012-07-31T14:18:39","slug":"python%e4%bb%a3%e7%a0%81%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"http:\/\/zerobox.org\/notes\/823.html","title":{"rendered":"Python\u4ee3\u7801\u6027\u80fd\u4f18\u5316\u6280\u5de7"},"content":{"rendered":"

\u4ee3\u7801\u4f18\u5316\u80fd\u591f\u8ba9\u7a0b\u5e8f\u8fd0\u884c\u66f4\u5feb\uff0c\u5b83\u662f\u5728\u4e0d\u6539\u53d8\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u679c\u7684\u60c5\u51b5\u4e0b\u4f7f\u5f97\u7a0b\u5e8f\u7684\u8fd0\u884c\u6548\u7387\u66f4\u9ad8\uff0c\u6839\u636e 80\/20 \u539f\u5219\uff0c\u5b9e\u73b0\u7a0b\u5e8f\u7684\u91cd\u6784\u3001\u4f18\u5316\u3001\u6269\u5c55\u4ee5\u53ca\u6587\u6863\u76f8\u5173\u7684\u4e8b\u60c5\u901a\u5e38\u9700\u8981\u6d88\u8017 80% \u7684\u5de5\u4f5c\u91cf\u3002\u4f18\u5316\u901a\u5e38\u5305\u542b\u4e24\u65b9\u9762\u7684\u5185\u5bb9\uff1a\u51cf\u5c0f\u4ee3\u7801\u7684\u4f53\u79ef\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u8fd0\u884c\u6548\u7387\u3002<\/p>\n

\u6539\u8fdb\u7b97\u6cd5\uff0c\u9009\u62e9\u5408\u9002\u7684\u6570\u636e\u7ed3\u6784<\/p>\n

\u4e00\u4e2a\u826f\u597d\u7684\u7b97\u6cd5\u80fd\u591f\u5bf9\u6027\u80fd\u8d77\u5230\u5173\u952e\u4f5c\u7528\uff0c\u56e0\u6b64\u6027\u80fd\u6539\u8fdb\u7684\u9996\u8981\u70b9\u662f\u5bf9\u7b97\u6cd5\u7684\u6539\u8fdb\u3002\u5728\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u6392\u5e8f\u4e0a\u4f9d\u6b21\u662f\uff1a<\/p>\n

O(1) -> O(lg n) -> O(n lg n) -> O(n^2) -> O(n^3) -> O(n^k) -> O(k^n) -> O(n!)<\/p>\n

\u56e0\u6b64\u5982\u679c\u80fd\u591f\u5728\u65f6\u95f4\u590d\u6742\u5ea6\u4e0a\u5bf9\u7b97\u6cd5\u8fdb\u884c\u4e00\u5b9a\u7684\u6539\u8fdb\uff0c\u5bf9\u6027\u80fd\u7684\u63d0\u9ad8\u4e0d\u8a00\u800c\u55bb\u3002\u4f46\u5bf9\u5177\u4f53\u7b97\u6cd5\u7684\u6539\u8fdb\u4e0d\u5c5e\u4e8e\u672c\u6587\u8ba8\u8bba\u7684\u8303\u56f4\uff0c\u8bfb\u8005\u53ef\u4ee5\u81ea\u884c\u53c2\u8003\u8fd9\u65b9\u9762\u8d44\u6599\u3002\u4e0b\u9762\u7684\u5185\u5bb9\u5c06\u96c6\u4e2d\u8ba8\u8bba\u6570\u636e\u7ed3\u6784\u7684\u9009\u62e9\u3002<\/p>\n

\u5b57\u5178 (dictionary) \u4e0e\u5217\u8868 (list)<\/strong><\/p>\n

Python \u5b57\u5178\u4e2d\u4f7f\u7528\u4e86 hash table\uff0c\u56e0\u6b64\u67e5\u627e\u64cd\u4f5c\u7684\u590d\u6742\u5ea6\u4e3a O(1)\uff0c\u800c list \u5b9e\u9645\u662f\u4e2a\u6570\u7ec4\uff0c\u5728 list \u4e2d\uff0c\u67e5\u627e\u9700\u8981\u904d\u5386\u6574\u4e2a list\uff0c\u5176\u590d\u6742\u5ea6\u4e3a O(n)\uff0c\u56e0\u6b64\u5bf9\u6210\u5458\u7684\u67e5\u627e\u8bbf\u95ee\u7b49\u64cd\u4f5c\u5b57\u5178\u8981\u6bd4 list \u66f4\u5feb\u3002<\/p>\n

\u6e05\u5355 1. \u4ee3\u7801 dict.py<\/strong><\/p>\n

    \n
  1. from\u00a0time\u00a0import\u00a0time<\/li>\n
  2. \u00a0t\u00a0=\u00a0time()<\/li>\n
  3. \u00a0list\u00a0=\u00a0[‘a’,’b’,’is’,’python’,’jason’,’hello’,’hill’,’with’,’phone’,’test’,<\/li>\n
  4. \u00a0‘dfdf’,’apple’,’pddf’,’ind’,’basic’,’none’,’baecr’,’var’,’bana’,’dd’,’wrd’]<\/li>\n
  5. \u00a0#list\u00a0=\u00a0dict.fromkeys(list,True)<\/li>\n
  6. \u00a0print\u00a0list<\/li>\n
  7. \u00a0filter\u00a0=\u00a0[]<\/li>\n
  8. \u00a0for\u00a0i\u00a0in\u00a0range\u00a0(1000000):<\/li>\n
  9. \u00a0for\u00a0find\u00a0in\u00a0[‘is’,’hat’,’new’,’list’,’old’,’.’]:<\/li>\n
  10. \u00a0if\u00a0find\u00a0not\u00a0in\u00a0list:<\/li>\n
  11. \u00a0filter.append(find)<\/li>\n
  12. \u00a0print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
  13. \u00a0print\u00a0time()-t<\/li>\n<\/ol>\n

    \u4e0a\u8ff0\u4ee3\u7801\u8fd0\u884c\u5927\u6982\u9700\u8981 16.09seconds\u3002\u5982\u679c\u53bb\u6389\u884c #list = dict.fromkeys(list,True) \u7684\u6ce8\u91ca\uff0c\u5c06 list \u8f6c\u6362\u4e3a\u5b57\u5178\u4e4b\u540e\u518d\u8fd0\u884c\uff0c\u65f6\u95f4\u5927\u7ea6\u4e3a 8.375 seconds\uff0c\u6548\u7387\u5927\u6982\u63d0\u9ad8\u4e86\u4e00\u534a\u3002\u56e0\u6b64\u5728\u9700\u8981\u591a\u6570\u636e\u6210\u5458\u8fdb\u884c\u9891\u7e41\u7684\u67e5\u627e\u6216\u8005\u8bbf\u95ee\u7684\u65f6\u5019\uff0c\u4f7f\u7528 dict \u800c\u4e0d\u662f list \u662f\u4e00\u4e2a\u8f83\u597d\u7684\u9009\u62e9\u3002<\/p>\n

    \u96c6\u5408 (set) \u4e0e\u5217\u8868 (list)<\/strong><\/p>\n

    set \u7684 union\uff0c intersection\uff0cdifference \u64cd\u4f5c\u8981\u6bd4 list \u7684\u8fed\u4ee3\u8981\u5feb\u3002\u56e0\u6b64\u5982\u679c\u6d89\u53ca\u5230\u6c42 list \u4ea4\u96c6\uff0c\u5e76\u96c6\u6216\u8005\u5dee\u7684\u95ee\u9898\u53ef\u4ee5\u8f6c\u6362\u4e3a set \u6765\u64cd\u4f5c\u3002<\/p>\n

    \u6e05\u5355 2. \u6c42 list \u7684\u4ea4\u96c6\uff1a<\/strong><\/p>\n

      \n
    1. from\u00a0time\u00a0import\u00a0time<\/li>\n
    2. \u00a0t\u00a0=\u00a0time()<\/li>\n
    3. \u00a0lista=[1,2,3,4,5,6,7,8,9,13,34,53,42,44]<\/li>\n
    4. \u00a0listb=[2,4,6,9,23]<\/li>\n
    5. \u00a0intersection=[]<\/li>\n
    6. \u00a0for\u00a0i\u00a0in\u00a0range\u00a0(1000000):<\/li>\n
    7. \u00a0for\u00a0a\u00a0in\u00a0lista:<\/li>\n
    8. \u00a0for\u00a0b\u00a0in\u00a0listb:<\/li>\n
    9. \u00a0if\u00a0a\u00a0==\u00a0b:<\/li>\n
    10. \u00a0intersection.append(a)<\/li>\n
    11. print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
    12. \u00a0print\u00a0time()-t<\/li>\n<\/ol>\n

      \u4e0a\u8ff0\u7a0b\u5e8f\u7684\u8fd0\u884c\u65f6\u95f4\u5927\u6982\u4e3a\uff1a<\/p>\n

      total run time:<\/p>\n

      38.4070000648<\/p>\n

      \u6e05\u5355 3. \u4f7f\u7528 set \u6c42\u4ea4\u96c6<\/strong><\/p>\n

        \n
      1. from\u00a0time\u00a0import\u00a0time<\/li>\n
      2. \u00a0t\u00a0=\u00a0time()<\/li>\n
      3. \u00a0lista=[1,2,3,4,5,6,7,8,9,13,34,53,42,44]<\/li>\n
      4. \u00a0listb=[2,4,6,9,23]<\/li>\n
      5. \u00a0intersection=[]<\/li>\n
      6. \u00a0for\u00a0i\u00a0in\u00a0range\u00a0(1000000):<\/li>\n
      7. \u00a0list(set(lista)&set(listb))<\/li>\n
      8. \u00a0print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
      9. \u00a0print\u00a0time()-t<\/li>\n<\/ol>\n

        \u6539\u4e3a set \u540e\u7a0b\u5e8f\u7684\u8fd0\u884c\u65f6\u95f4\u7f29\u51cf\u4e3a 8.75\uff0c\u63d0\u9ad8\u4e86 4 \u500d\u591a\uff0c\u8fd0\u884c\u65f6\u95f4\u5927\u5927\u7f29\u77ed\u3002\u8bfb\u8005\u53ef\u4ee5\u81ea\u884c\u4f7f\u7528\u8868 1 \u5176\u4ed6\u7684\u64cd\u4f5c\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n

        \u8868 1. set \u5e38\u89c1\u7528\u6cd5<\/p>\n

        \u8bed\u6cd5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u64cd\u4f5c\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8bf4\u660e<\/p>\n

        set(list1) | set(list2) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 union\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5305\u542b list1 \u548c list2 \u6240\u6709\u6570\u636e\u7684\u65b0\u96c6\u5408<\/p>\n

        set(list1) & set(list2)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0intersection \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u5305\u542b list1 \u548c list2 \u4e2d\u5171\u540c\u5143\u7d20\u7684\u65b0\u96c6\u5408<\/p>\n

        set(list1) \u2013 set(list2)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0difference\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728 list1 \u4e2d\u51fa\u73b0\u4f46\u4e0d\u5728 list2 \u4e2d\u51fa\u73b0\u7684\u5143\u7d20\u7684\u96c6\u5408<\/p>\n

        \u5bf9\u5faa\u73af\u7684\u4f18\u5316<\/strong><\/p>\n

        \u5bf9\u5faa\u73af\u7684\u4f18\u5316\u6240\u9075\u5faa\u7684\u539f\u5219\u662f\u5c3d\u91cf\u51cf\u5c11\u5faa\u73af\u8fc7\u7a0b\u4e2d\u7684\u8ba1\u7b97\u91cf\uff0c\u6709\u591a\u91cd\u5faa\u73af\u7684\u5c3d\u91cf\u5c06\u5185\u5c42\u7684\u8ba1\u7b97\u63d0\u5230\u4e0a\u4e00\u5c42\u3002 \u4e0b\u9762\u901a\u8fc7\u5b9e\u4f8b\u6765\u5bf9\u6bd4\u5faa\u73af\u4f18\u5316\u540e\u6240\u5e26\u6765\u7684\u6027\u80fd\u7684\u63d0\u9ad8\u3002\u7a0b\u5e8f\u6e05\u5355 4 \u4e2d\uff0c\u5982\u679c\u4e0d\u8fdb\u884c\u5faa\u73af\u4f18\u5316\uff0c\u5176\u5927\u6982\u7684\u8fd0\u884c\u65f6\u95f4\u7ea6\u4e3a 132.375\u3002<\/p>\n

        \u6e05\u5355 4. \u4e3a\u8fdb\u884c\u5faa\u73af\u4f18\u5316\u524d<\/strong><\/p>\n

          \n
        1. from\u00a0time\u00a0import\u00a0time<\/li>\n
        2. \u00a0t\u00a0=\u00a0time()<\/li>\n
        3. \u00a0lista\u00a0=\u00a0[1,2,3,4,5,6,7,8,9,10]<\/li>\n
        4. \u00a0listb\u00a0=[0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,0.01]<\/li>\n
        5. \u00a0for\u00a0i\u00a0in\u00a0range\u00a0(1000000):<\/li>\n
        6. \u00a0for\u00a0a\u00a0in\u00a0range(len(lista)):<\/li>\n
        7. \u00a0for\u00a0b\u00a0in\u00a0range(len(listb)):<\/li>\n
        8. \u00a0x=lista[a]+listb[b]<\/li>\n
        9. \u00a0print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
        10. \u00a0print\u00a0time()-t<\/li>\n<\/ol>\n

          \u73b0\u5728\u8fdb\u884c\u5982\u4e0b\u4f18\u5316\uff0c\u5c06\u957f\u5ea6\u8ba1\u7b97\u63d0\u5230\u5faa\u73af\u5916\uff0crange \u7528 xrange \u4ee3\u66ff\uff0c\u540c\u65f6\u5c06\u7b2c\u4e09\u5c42\u7684\u8ba1\u7b97 lista[a] \u63d0\u5230\u5faa\u73af\u7684\u7b2c\u4e8c\u5c42\u3002<\/p>\n

          \u6e05\u5355 5. \u5faa\u73af\u4f18\u5316\u540e<\/strong><\/p>\n

            \n
          1. from\u00a0time\u00a0import\u00a0time<\/li>\n
          2. \u00a0t\u00a0=\u00a0time()<\/li>\n
          3. \u00a0lista\u00a0=\u00a0[1,2,3,4,5,6,7,8,9,10]<\/li>\n
          4. \u00a0listb\u00a0=[0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,0.01]<\/li>\n
          5. \u00a0len1=len(lista)<\/li>\n
          6. \u00a0len2=len(listb)<\/li>\n
          7. \u00a0for\u00a0i\u00a0in\u00a0xrange\u00a0(1000000):<\/li>\n
          8. \u00a0for\u00a0a\u00a0in\u00a0xrange(len1):<\/li>\n
          9. \u00a0temp=lista[a]<\/li>\n
          10. \u00a0for\u00a0b\u00a0in\u00a0xrange(len2):<\/li>\n
          11. \u00a0x=temp+listb[b]<\/li>\n
          12. \u00a0print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
          13. \u00a0print\u00a0time()-t<\/li>\n<\/ol>\n

            \u4e0a\u8ff0\u4f18\u5316\u540e\u7684\u7a0b\u5e8f\u5176\u8fd0\u884c\u65f6\u95f4\u7f29\u77ed\u4e3a 102.171999931\u3002\u5728\u6e05\u5355 4 \u4e2d lista[a] \u88ab\u8ba1\u7b97\u7684\u6b21\u6570\u4e3a 1000000*10*10\uff0c\u800c\u5728\u4f18\u5316\u540e\u7684\u4ee3\u7801\u4e2d\u88ab\u8ba1\u7b97\u7684\u6b21\u6570\u4e3a 1000000*10\uff0c\u8ba1\u7b97\u6b21\u6570\u5927\u5e45\u5ea6\u7f29\u77ed\uff0c\u56e0\u6b64\u6027\u80fd\u6709\u6240\u63d0\u5347\u3002<\/p>\n

            \u5145\u5206\u5229\u7528 Lazy if-evaluation \u7684\u7279\u6027<\/strong><\/p>\n

            python \u4e2d\u6761\u4ef6\u8868\u8fbe\u5f0f\u662f lazy evaluation \u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u5982\u679c\u5b58\u5728\u6761\u4ef6\u8868\u8fbe\u5f0f if x and y\uff0c\u5728 x \u4e3a false \u7684\u60c5\u51b5\u4e0b y \u8868\u8fbe\u5f0f\u7684\u503c\u5c06\u4e0d\u518d\u8ba1\u7b97\u3002\u56e0\u6b64\u53ef\u4ee5\u5229\u7528\u8be5\u7279\u6027\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u63d0\u9ad8\u7a0b\u5e8f\u6548\u7387\u3002<\/p>\n

            \u6e05\u5355 6. \u5229\u7528 Lazy if-evaluation \u7684\u7279\u6027<\/strong><\/p>\n

              \n
            1. from\u00a0time\u00a0import\u00a0time<\/li>\n
            2. \u00a0t\u00a0=\u00a0time()<\/li>\n
            3. \u00a0abbreviations\u00a0=\u00a0[‘cf.’,\u00a0‘e.g.’,\u00a0‘ex.’,\u00a0‘etc.’,\u00a0‘fig.’,\u00a0‘i.e.’,\u00a0‘Mr.’,\u00a0‘vs.’]<\/li>\n
            4. \u00a0for\u00a0i\u00a0in\u00a0range\u00a0(1000000):<\/li>\n
            5. \u00a0for\u00a0w\u00a0in\u00a0(‘Mr.’,\u00a0‘Hat’,\u00a0‘is’,\u00a0‘chasing’,\u00a0‘the’,\u00a0‘black’,\u00a0‘cat’,\u00a0‘.’):<\/li>\n
            6. \u00a0if\u00a0w\u00a0in\u00a0abbreviations:<\/li>\n
            7. \u00a0#if\u00a0w[-1]\u00a0==\u00a0‘.’\u00a0and\u00a0w\u00a0in\u00a0abbreviations:<\/li>\n
            8. \u00a0pass<\/li>\n
            9. \u00a0print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
            10. \u00a0print\u00a0time()-t<\/li>\n<\/ol>\n

              \u5728\u672a\u8fdb\u884c\u4f18\u5316\u4e4b\u524d\u7a0b\u5e8f\u7684\u8fd0\u884c\u65f6\u95f4\u5927\u6982\u4e3a 8.84\uff0c\u5982\u679c\u4f7f\u7528\u6ce8\u91ca\u884c\u4ee3\u66ff\u7b2c\u4e00\u4e2a if\uff0c\u8fd0\u884c\u7684\u65f6\u95f4\u5927\u6982\u4e3a 6.17\u3002<\/p>\n

              \u5b57\u7b26\u4e32\u7684\u4f18\u5316<\/strong><\/p>\n

              python \u4e2d\u7684\u5b57\u7b26\u4e32\u5bf9\u8c61\u662f\u4e0d\u53ef\u6539\u53d8\u7684\uff0c\u56e0\u6b64\u5bf9\u4efb\u4f55\u5b57\u7b26\u4e32\u7684\u64cd\u4f5c\u5982\u62fc\u63a5\uff0c\u4fee\u6539\u7b49\u90fd\u5c06\u4ea7\u751f\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\u5bf9\u8c61\uff0c\u800c\u4e0d\u662f\u57fa\u4e8e\u539f\u5b57\u7b26\u4e32\uff0c\u56e0\u6b64\u8fd9\u79cd\u6301\u7eed\u7684 copy \u4f1a\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u5f71\u54cd python \u7684\u6027\u80fd\u3002\u5bf9\u5b57\u7b26\u4e32\u7684\u4f18\u5316\u4e5f\u662f\u6539\u5584\u6027\u80fd\u7684\u4e00\u4e2a\u91cd\u8981\u7684\u65b9\u9762\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u6587\u672c\u8f83\u591a\u7684\u60c5\u51b5\u4e0b\u3002\u5b57\u7b26\u4e32\u7684\u4f18\u5316\u4e3b\u8981\u96c6\u4e2d\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n

              1\u3001\u5728\u5b57\u7b26\u4e32\u8fde\u63a5\u7684\u4f7f\u7528\u5c3d\u91cf\u4f7f\u7528 join() \u800c\u4e0d\u662f +\uff1a\u5728\u4ee3\u7801\u6e05\u5355 7 \u4e2d\u4f7f\u7528 + \u8fdb\u884c\u5b57\u7b26\u4e32\u8fde\u63a5\u5927\u6982\u9700\u8981 0.125 s\uff0c\u800c\u4f7f\u7528 join \u7f29\u77ed\u4e3a 0.016s\u3002\u56e0\u6b64\u5728\u5b57\u7b26\u7684\u64cd\u4f5c\u4e0a join \u6bd4 + \u8981\u5feb\uff0c\u56e0\u6b64\u8981\u5c3d\u91cf\u4f7f\u7528 join \u800c\u4e0d\u662f +\u3002<\/p>\n

              \u6e05\u5355 7. \u4f7f\u7528 join \u800c\u4e0d\u662f + \u8fde\u63a5\u5b57\u7b26\u4e32<\/strong><\/p>\n

                \n
              1. from\u00a0time\u00a0import\u00a0time<\/li>\n
              2. t\u00a0=\u00a0time()<\/li>\n
              3. \u00a0s\u00a0=\u00a0“”<\/li>\n
              4. \u00a0list\u00a0=\u00a0[‘a’,’b’,’b’,’d’,’e’,’f’,’g’,’h’,’i’,’j’,’k’,’l’,’m’,’n’]<\/li>\n
              5. \u00a0for\u00a0i\u00a0in\u00a0range\u00a0(10000):<\/li>\n
              6. \u00a0for\u00a0substr\u00a0in\u00a0list:<\/li>\n
              7. \u00a0s+=\u00a0substr<\/li>\n
              8. \u00a0print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
              9. \u00a0print\u00a0time()-t<\/li>\n<\/ol>\n

                \u540c\u65f6\u8981\u907f\u514d\uff1a<\/p>\n

                  \n
                1. s\u00a0=\u00a0“”<\/li>\n
                2. for\u00a0x\u00a0in\u00a0list:<\/li>\n
                3. s\u00a0+=\u00a0func(x)<\/li>\n<\/ol>\n

                  \u800c\u662f\u8981\u4f7f\u7528\uff1a<\/p>\n

                  \n
                  \n\n\n\n
                  \n
                  1<\/div>\n
                  2<\/div>\n<\/td>\n
                  		\n
                  slist = [func(elt) for elt in somelist]<\/div>\n
                  \u00a0s = “”.join(slist)<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

                  2\u3001\u5f53\u5bf9\u5b57\u7b26\u4e32\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6216\u8005\u5185\u7f6e\u51fd\u6570\u6765\u5904\u7406\u7684\u65f6\u5019\uff0c\u9009\u62e9\u5185\u7f6e\u51fd\u6570\u3002\u5982 str.isalpha()\uff0cstr.isdigit()\uff0cstr.startswith((\u2018x\u2019, \u2018yz\u2019))\uff0cstr.endswith((\u2018x\u2019, \u2018yz\u2019))<\/p>\n

                  3\u3001\u5bf9\u5b57\u7b26\u8fdb\u884c\u683c\u5f0f\u5316\u6bd4\u76f4\u63a5\u4e32\u8054\u8bfb\u53d6\u8981\u5feb\uff0c\u56e0\u6b64\u8981\u4f7f\u7528<\/p>\n

                    \n
                  1. out\u00a0=\u00a0“%s%s%s%s”\u00a0%\u00a0(head,\u00a0prologue,\u00a0query,\u00a0tail)<\/li>\n<\/ol>\n

                    \u800c\u907f\u514d<\/p>\n

                      \n
                    1. out\u00a0=\u00a0“”\u00a0+\u00a0head\u00a0+\u00a0prologue\u00a0+\u00a0query\u00a0+\u00a0tail\u00a0+\u00a0“”<\/li>\n<\/ol>\n

                      \u4f7f\u7528\u5217\u8868\u89e3\u6790\uff08list comprehension\uff09\u548c\u751f\u6210\u5668\u8868\u8fbe\u5f0f\uff08generator expression\uff09<\/p>\n

                      \u5217\u8868\u89e3\u6790\u8981\u6bd4\u5728\u5faa\u73af\u4e2d\u91cd\u65b0\u6784\u5efa\u4e00\u4e2a\u65b0\u7684 list \u66f4\u4e3a\u9ad8\u6548\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u8fd9\u4e00\u7279\u6027\u6765\u63d0\u9ad8\u8fd0\u884c\u7684\u6548\u7387\u3002<\/p>\n

                        \n
                      1. from\u00a0time\u00a0import\u00a0time<\/li>\n
                      2. \u00a0t\u00a0=\u00a0time()<\/li>\n
                      3. \u00a0list\u00a0=\u00a0[‘a’,’b’,’is’,’python’,’jason’,’hello’,’hill’,’with’,’phone’,’test’,<\/li>\n
                      4. \u00a0‘dfdf’,’apple’,’pddf’,’ind’,’basic’,’none’,’baecr’,’var’,’bana’,’dd’,’wrd’]<\/li>\n
                      5. \u00a0total=[]<\/li>\n
                      6. \u00a0for\u00a0i\u00a0in\u00a0range\u00a0(1000000):<\/li>\n
                      7. \u00a0for\u00a0w\u00a0in\u00a0list:<\/li>\n
                      8. \u00a0total.append(w)<\/li>\n
                      9. \u00a0print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
                      10. \u00a0print\u00a0time()-t<\/li>\n<\/ol>\n

                        \u4f7f\u7528\u5217\u8868\u89e3\u6790\uff1a<\/p>\n

                          \n
                        1. for\u00a0i\u00a0in\u00a0range\u00a0(1000000):<\/li>\n
                        2. a\u00a0=\u00a0[w\u00a0for\u00a0w\u00a0in\u00a0list]<\/li>\n<\/ol>\n

                          \u4e0a\u8ff0\u4ee3\u7801\u76f4\u63a5\u8fd0\u884c\u5927\u6982\u9700\u8981 17s\uff0c\u800c\u6539\u4e3a\u4f7f\u7528\u5217\u8868\u89e3\u6790\u540e \uff0c\u8fd0\u884c\u65f6\u95f4\u7f29\u77ed\u4e3a 9.29s\u3002\u5c06\u8fd1\u63d0\u9ad8\u4e86\u4e00\u534a\u3002\u751f\u6210\u5668\u8868\u8fbe\u5f0f\u5219\u662f\u5728 2.4 \u4e2d\u5f15\u5165\u7684\u65b0\u5185\u5bb9\uff0c\u8bed\u6cd5\u548c\u5217\u8868\u89e3\u6790\u7c7b\u4f3c\uff0c\u4f46\u662f\u5728\u5927\u6570\u636e\u91cf\u5904\u7406\u65f6\uff0c\u751f\u6210\u5668\u8868\u8fbe\u5f0f\u7684\u4f18\u52bf\u8f83\u4e3a\u660e\u663e\uff0c\u5b83\u5e76\u4e0d\u521b\u5efa\u4e00\u4e2a\u5217\u8868\uff0c\u53ea\u662f\u8fd4\u56de\u4e00\u4e2a\u751f\u6210\u5668\uff0c\u56e0\u6b64\u6548\u7387\u8f83\u9ad8\u3002\u5728\u4e0a\u8ff0\u4f8b\u5b50\u4e0a\u4e2d\u4ee3\u7801 a = [w for w in list] \u4fee\u6539\u4e3a a = (w for w in list)\uff0c\u8fd0\u884c\u65f6\u95f4\u8fdb\u4e00\u6b65\u51cf\u5c11\uff0c\u7f29\u77ed\u7ea6\u4e3a 2.98s\u3002<\/p>\n

                          \u5176\u4ed6\u4f18\u5316\u6280\u5de7<\/strong><\/p>\n

                          1\u3001\u5982\u679c\u9700\u8981\u4ea4\u6362\u4e24\u4e2a\u53d8\u91cf\u7684\u503c\u4f7f\u7528 a,b=b,a \u800c\u4e0d\u662f\u501f\u52a9\u4e2d\u95f4\u53d8\u91cf t=a;a=b;b=t\uff1b<\/p>\n

                            \n
                          1. >>>\u00a0from\u00a0timeit\u00a0import\u00a0Timer<\/li>\n
                          2. \u00a0>>>\u00a0Timer(“t=a;a=b;b=t”,”a=1;b=2″).timeit()<\/li>\n
                          3. \u00a00.25154118749729365<\/li>\n
                          4. \u00a0>>>\u00a0Timer(“a,b=b,a”,”a=1;b=2″).timeit()<\/li>\n
                          5. \u00a00.17156677734181258<\/li>\n
                          6. \u00a0>><\/li>\n
                          7. ><\/li>\n<\/ol>\n

                            2\u3001\u5728\u5faa\u73af\u7684\u65f6\u5019\u4f7f\u7528 xrange \u800c\u4e0d\u662f range\uff1b\u4f7f\u7528 xrange \u53ef\u4ee5\u8282\u7701\u5927\u91cf\u7684\u7cfb\u7edf\u5185\u5b58\uff0c\u56e0\u4e3a xrange() \u5728\u5e8f\u5217\u4e2d\u6bcf\u6b21\u8c03\u7528\u53ea\u4ea7\u751f\u4e00\u4e2a\u6574\u6570\u5143\u7d20\u3002\u800c range() \u5c07\u76f4\u63a5\u8fd4\u56de\u5b8c\u6574\u7684\u5143\u7d20\u5217\u8868\uff0c\u7528\u4e8e\u5faa\u73af\u65f6\u4f1a\u6709\u4e0d\u5fc5\u8981\u7684\u5f00\u9500\u3002\u5728 python3 \u4e2d xrange \u4e0d\u518d\u5b58\u5728\uff0c\u91cc\u9762 range \u63d0\u4f9b\u4e00\u4e2a\u53ef\u4ee5\u904d\u5386\u4efb\u610f\u957f\u5ea6\u7684\u8303\u56f4\u7684 iterator\u3002<\/p>\n

                            3\u3001\u4f7f\u7528\u5c40\u90e8\u53d8\u91cf\uff0c\u907f\u514d\u201dglobal\u201d \u5173\u952e\u5b57\u3002python \u8bbf\u95ee\u5c40\u90e8\u53d8\u91cf\u4f1a\u6bd4\u5168\u5c40\u53d8\u91cf\u8981\u5feb\u5f97\u591a\uff0c\u56e0 \u6b64\u53ef\u4ee5\u5229\u7528\u8fd9\u4e00\u7279\u6027\u63d0\u5347\u6027\u80fd\u3002<\/p>\n

                            4\u3001if done is not None \u6bd4\u8bed\u53e5 if done != None \u66f4\u5feb\uff0c\u8bfb\u8005\u53ef\u4ee5\u81ea\u884c\u9a8c\u8bc1\uff1b<\/p>\n

                            5\u3001\u5728\u8017\u65f6\u8f83\u591a\u7684\u5faa\u73af\u4e2d\uff0c\u53ef\u4ee5\u628a\u51fd\u6570\u7684\u8c03\u7528\u6539\u4e3a\u5185\u8054\u7684\u65b9\u5f0f\uff1b<\/p>\n

                            6\u3001\u4f7f\u7528\u7ea7\u8054\u6bd4\u8f83 \u201cx < y < z\u201d \u800c\u4e0d\u662f \u201cx < y and y < z\u201d\uff1b<\/p>\n

                            7\u3001while 1 \u8981\u6bd4 while True \u66f4\u5feb\uff08\u5f53\u7136\u540e\u8005\u7684\u53ef\u8bfb\u6027\u66f4\u597d\uff09\uff1b<\/p>\n

                            8\u3001build in \u51fd\u6570\u901a\u5e38\u8f83\u5feb\uff0cadd(a,b) \u8981\u4f18\u4e8e a+b\u3002<\/p>\n

                            \u5b9a\u4f4d\u7a0b\u5e8f\u6027\u80fd\u74f6\u9888<\/strong><\/p>\n

                            \u5bf9\u4ee3\u7801\u4f18\u5316\u7684\u524d\u63d0\u662f\u9700\u8981\u4e86\u89e3\u6027\u80fd\u74f6\u9888\u5728\u4ec0\u4e48\u5730\u65b9\uff0c\u7a0b\u5e8f\u8fd0\u884c\u7684\u4e3b\u8981\u65f6\u95f4\u662f\u6d88\u8017\u5728\u54ea\u91cc\uff0c\u5bf9\u4e8e\u6bd4\u8f83\u590d\u6742\u7684\u4ee3\u7801\u53ef\u4ee5\u501f\u52a9\u4e00\u4e9b\u5de5\u5177\u6765\u5b9a\u4f4d\uff0cpython \u5185\u7f6e\u4e86\u4e30\u5bcc\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u5982 profile,cProfile \u4e0e hotshot \u7b49\u3002\u5176\u4e2d Profiler \u662f python \u81ea\u5e26\u7684\u4e00\u7ec4\u7a0b\u5e8f\uff0c\u80fd\u591f\u63cf\u8ff0\u7a0b\u5e8f\u8fd0\u884c\u65f6\u5019\u7684\u6027\u80fd\uff0c\u5e76\u63d0\u4f9b\u5404\u79cd\u7edf\u8ba1\u5e2e\u52a9\u7528\u6237\u5b9a\u4f4d\u7a0b\u5e8f\u7684\u6027\u80fd\u74f6\u9888\u3002Python \u6807\u51c6\u6a21\u5757\u63d0\u4f9b\u4e09\u79cd profilers:cProfile,profile \u4ee5\u53ca hotshot\u3002<\/p>\n

                            profile \u7684\u4f7f\u7528\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5728\u4f7f\u7528\u4e4b\u524d\u8fdb\u884c import \u5373\u53ef\u3002\u5177\u4f53\u5b9e\u4f8b\u5982\u4e0b\uff1a<\/p>\n

                            \u6e05\u5355 8. \u4f7f\u7528 profile \u8fdb\u884c\u6027\u80fd\u5206\u6790<\/strong><\/p>\n

                              \n
                            1. import\u00a0profile<\/li>\n
                            2. def\u00a0profileTest():<\/li>\n
                            3. \u00a0\u00a0\u00a0Total\u00a0=1;<\/li>\n
                            4. \u00a0\u00a0\u00a0for\u00a0i\u00a0in\u00a0range(10):<\/li>\n
                            5. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Total=Total*(i+1)<\/li>\n
                            6. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0print\u00a0Total<\/li>\n
                            7. \u00a0\u00a0\u00a0return\u00a0Total<\/li>\n
                            8. if\u00a0__name__\u00a0==\u00a0“__main__”:<\/li>\n
                            9. \u00a0\u00a0\u00a0profile.run(“profileTest()”)<\/li>\n<\/ol>\n

                              \u7a0b\u5e8f\u7684\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n

                              \u56fe 1. \u6027\u80fd\u5206\u6790\u7ed3\u679c<\/p>\n

                              \"Python<\/p>\n

                              \u5176\u4e2d\u8f93\u51fa\u6bcf\u5217\u7684\u5177\u4f53\u89e3\u91ca\u5982\u4e0b\uff1a<\/p>\n

                              \u25cfncalls\uff1a\u8868\u793a\u51fd\u6570\u8c03\u7528\u7684\u6b21\u6570\uff1b<\/p>\n

                              \u25cftottime\uff1a\u8868\u793a\u6307\u5b9a\u51fd\u6570\u7684\u603b\u7684\u8fd0\u884c\u65f6\u95f4\uff0c\u9664\u6389\u51fd\u6570\u4e2d\u8c03\u7528\u5b50\u51fd\u6570\u7684\u8fd0\u884c\u65f6\u95f4\uff1b<\/p>\n

                              \u25cfpercall\uff1a\uff08\u7b2c\u4e00\u4e2a percall\uff09\u7b49\u4e8e tottime\/ncalls\uff1b<\/p>\n

                              \u25cfcumtime\uff1a\u8868\u793a\u8be5\u51fd\u6570\u53ca\u5176\u6240\u6709\u5b50\u51fd\u6570\u7684\u8c03\u7528\u8fd0\u884c\u7684\u65f6\u95f4\uff0c\u5373\u51fd\u6570\u5f00\u59cb\u8c03\u7528\u5230\u8fd4\u56de\u7684\u65f6\u95f4\uff1b<\/p>\n

                              \u25cfpercall\uff1a\uff08\u7b2c\u4e8c\u4e2a percall\uff09\u5373\u51fd\u6570\u8fd0\u884c\u4e00\u6b21\u7684\u5e73\u5747\u65f6\u95f4\uff0c\u7b49\u4e8e cumtime\/ncalls\uff1b<\/p>\n

                              \u25cffilename:lineno(function)\uff1a\u6bcf\u4e2a\u51fd\u6570\u8c03\u7528\u7684\u5177\u4f53\u4fe1\u606f\uff1b<\/p>\n

                              \u5982\u679c\u9700\u8981\u5c06\u8f93\u51fa\u4ee5\u65e5\u5fd7\u7684\u5f62\u5f0f\u4fdd\u5b58\uff0c\u53ea\u9700\u8981\u5728\u8c03\u7528\u7684\u65f6\u5019\u52a0\u5165\u53e6\u5916\u4e00\u4e2a\u53c2\u6570\u3002\u5982 profile.run(\u201cprofileTest()\u201d,\u201dtestprof\u201d)\u3002<\/p>\n

                              \u5bf9\u4e8e profile \u7684\u5256\u6790\u6570\u636e\uff0c\u5982\u679c\u4ee5\u4e8c\u8fdb\u5236\u6587\u4ef6\u7684\u65f6\u5019\u4fdd\u5b58\u7ed3\u679c\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u901a\u8fc7 pstats \u6a21\u5757\u8fdb\u884c\u6587\u672c\u62a5\u8868\u5206\u6790\uff0c\u5b83\u652f\u6301\u591a\u79cd\u5f62\u5f0f\u7684\u62a5\u8868\u8f93\u51fa\uff0c\u662f\u6587\u672c\u754c\u9762\u4e0b\u4e00\u4e2a\u8f83\u4e3a\u5b9e\u7528\u7684\u5de5\u5177\u3002\u4f7f\u7528\u975e\u5e38\u7b80\u5355\uff1a<\/p>\n

                                \n
                              1. import\u00a0pstats<\/li>\n
                              2. p\u00a0=\u00a0pstats.Stats(‘testprof’)<\/li>\n
                              3. p.sort_stats(“name”).print_stats()<\/li>\n<\/ol>\n

                                \u5176\u4e2d sort_stats() \u65b9\u6cd5\u80fd\u591f\u5bf9\u5256\u5206\u6570\u636e\u8fdb\u884c\u6392\u5e8f\uff0c \u53ef\u4ee5\u63a5\u53d7\u591a\u4e2a\u6392\u5e8f\u5b57\u6bb5\uff0c\u5982 sort_stats(\u2018name\u2019, \u2018file\u2019) \u5c06\u9996\u5148\u6309\u7167\u51fd\u6570\u540d\u79f0\u8fdb\u884c\u6392\u5e8f\uff0c\u7136\u540e\u518d\u6309\u7167\u6587\u4ef6\u540d\u8fdb\u884c\u6392\u5e8f\u3002\u5e38\u89c1\u7684\u6392\u5e8f\u5b57\u6bb5\u6709 calls( \u88ab\u8c03\u7528\u7684\u6b21\u6570 )\uff0ctime\uff08\u51fd\u6570\u5185\u90e8\u8fd0\u884c\u65f6\u95f4\uff09\uff0ccumulative\uff08\u8fd0\u884c\u7684\u603b\u65f6\u95f4\uff09\u7b49\u3002\u6b64\u5916 pstats \u4e5f\u63d0\u4f9b\u4e86\u547d\u4ee4\u884c\u4ea4\u4e92\u5de5\u5177\uff0c\u6267\u884c python \u2013 m pstats \u540e\u53ef\u4ee5\u901a\u8fc7 help \u4e86\u89e3\u66f4\u591a\u4f7f\u7528\u65b9\u5f0f\u3002<\/p>\n

                                \u5bf9\u4e8e\u5927\u578b\u5e94\u7528\u7a0b\u5e8f\uff0c\u5982\u679c\u80fd\u591f\u5c06\u6027\u80fd\u5206\u6790\u7684\u7ed3\u679c\u4ee5\u56fe\u5f62\u7684\u65b9\u5f0f\u5448\u73b0\uff0c\u5c06\u4f1a\u975e\u5e38\u5b9e\u7528\u548c\u76f4\u89c2\uff0c\u5e38\u89c1\u7684\u53ef\u89c6\u5316\u5de5\u5177\u6709 Gprof2Dot\uff0cvisualpytune\uff0cKCacheGrind \u7b49\uff0c\u8bfb\u8005\u53ef\u4ee5\u81ea\u884c\u67e5\u9605\u76f8\u5173\u5b98\u7f51\uff0c\u672c\u6587\u4e0d\u505a\u8be6\u7ec6\u8ba8\u8bba\u3002<\/p>\n

                                Python \u6027\u80fd\u4f18\u5316\u5de5\u5177<\/strong><\/p>\n

                                Python \u6027\u80fd\u4f18\u5316\u9664\u4e86\u6539\u8fdb\u7b97\u6cd5\uff0c\u9009\u7528\u5408\u9002\u7684\u6570\u636e\u7ed3\u6784\u4e4b\u5916\uff0c\u8fd8\u6709\u51e0\u79cd\u5173\u952e\u7684\u6280\u672f\uff0c\u6bd4\u5982\u5c06\u5173\u952e python \u4ee3\u7801\u90e8\u5206\u91cd\u5199\u6210 C \u6269\u5c55\u6a21\u5757\uff0c\u6216\u8005\u9009\u7528\u5728\u6027\u80fd\u4e0a\u66f4\u4e3a\u4f18\u5316\u7684\u89e3\u91ca\u5668\u7b49\uff0c\u8fd9\u4e9b\u5728\u672c\u6587\u4e2d\u7edf\u79f0\u4e3a\u4f18\u5316\u5de5\u5177\u3002python \u6709\u5f88\u591a\u81ea\u5e26\u7684\u4f18\u5316\u5de5\u5177\uff0c\u5982 Psyco\uff0cPypy\uff0cCython\uff0cPyrex \u7b49\uff0c\u8fd9\u4e9b\u4f18\u5316\u5de5\u5177\u5404\u6709\u5343\u79cb\uff0c\u672c\u8282\u9009\u62e9\u51e0\u79cd\u8fdb\u884c\u4ecb\u7ecd\u3002<\/p>\n

                                Psyco<\/p>\n

                                psyco \u662f\u4e00\u4e2a just-in-time \u7684\u7f16\u8bd1\u5668\uff0c\u5b83\u80fd\u591f\u5728\u4e0d\u6539\u53d8\u6e90\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\u63d0\u9ad8\u4e00\u5b9a\u7684\u6027\u80fd\uff0cPsyco \u5c06\u64cd\u4f5c\u7f16\u8bd1\u6210\u6709\u70b9\u4f18\u5316\u7684\u673a\u5668\u7801\uff0c\u5176\u64cd\u4f5c\u5206\u6210\u4e09\u4e2a\u4e0d\u540c\u7684\u7ea7\u522b\uff0c\u6709\u201d\u8fd0\u884c\u65f6\u201d\u3001\u201d\u7f16\u8bd1\u65f6\u201d\u548c\u201d\u865a\u62df\u65f6\u201d\u53d8\u91cf\u3002\u5e76\u6839\u636e\u9700\u8981\u63d0\u9ad8\u548c\u964d\u4f4e\u53d8\u91cf\u7684\u7ea7\u522b\u3002\u8fd0\u884c\u65f6\u53d8\u91cf\u53ea\u662f\u5e38\u89c4 Python \u89e3\u91ca\u5668\u5904\u7406\u7684\u539f\u59cb\u5b57\u8282\u7801\u548c\u5bf9\u8c61\u7ed3\u6784\u3002\u4e00\u65e6 Psyco \u5c06\u64cd\u4f5c\u7f16\u8bd1\u6210\u673a\u5668\u7801\uff0c\u90a3\u4e48\u7f16\u8bd1\u65f6\u53d8\u91cf\u5c31\u4f1a\u5728\u673a\u5668\u5bc4\u5b58\u5668\u548c\u53ef\u76f4\u63a5\u8bbf\u95ee\u7684\u5185\u5b58\u4f4d\u7f6e\u4e2d\u8868\u793a\u3002\u540c\u65f6 python \u80fd\u9ad8\u901f\u7f13\u5b58\u5df2\u7f16\u8bd1\u7684\u673a\u5668\u7801\u4ee5\u5907\u4eca\u540e\u91cd\u7528\uff0c\u8fd9\u6837\u80fd\u8282\u7701\u4e00\u70b9\u65f6\u95f4\u3002\u4f46 Psyco \u4e5f\u6709\u5176\u7f3a\u70b9\uff0c\u5176\u672c\u8eab\u8fd0\u884c\u6240\u5360\u5185\u5b58\u8f83\u5927\u3002\u76ee\u524d psyco \u5df2\u7ecf\u4e0d\u5728 python2.7 \u4e2d\u652f\u6301\uff0c\u800c\u4e14\u4e0d\u518d\u63d0\u4f9b\u7ef4\u62a4\u548c\u66f4\u65b0\u4e86\uff0c\u5bf9\u5176\u611f\u5174\u8da3\u7684\u53ef\u4ee5\u53c2\u8003\u00a0http:\/\/psyco.sourceforge.net\/<\/p>\n

                                Pypy<\/p>\n

                                PyPy \u8868\u793a \u201c\u7528 Python \u5b9e\u73b0\u7684 Python\u201d\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b83\u662f\u4f7f\u7528\u4e00\u4e2a\u79f0\u4e3a RPython \u7684 Python \u5b50\u96c6\u5b9e\u73b0\u7684\uff0c\u80fd\u591f\u5c06 Python \u4ee3\u7801\u8f6c\u6210 C\uff0c .NET\uff0c Java \u7b49\u8bed\u8a00\u548c\u5e73\u53f0\u7684\u4ee3\u7801\u3002PyPy \u96c6\u6210\u4e86\u4e00\u79cd\u5373\u65f6 (JIT) \u7f16\u8bd1\u5668\u3002\u548c\u8bb8\u591a\u7f16\u8bd1\u5668\uff0c\u89e3\u91ca\u5668\u4e0d\u540c\uff0c\u5b83\u4e0d\u5173\u5fc3 Python \u4ee3\u7801\u7684\u8bcd\u6cd5\u5206\u6790\u548c\u8bed\u6cd5\u6811\u3002 \u56e0\u4e3a\u5b83\u662f\u7528 Python \u8bed\u8a00\u5199\u7684\uff0c\u6240\u4ee5\u5b83\u76f4\u63a5\u5229\u7528 Python \u8bed\u8a00\u7684 Code Object.\u3002 Code Object \u662f Python \u5b57\u8282\u7801\u7684\u8868\u793a\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c PyPy \u76f4\u63a5\u5206\u6790 Python \u4ee3\u7801\u6240\u5bf9\u5e94\u7684\u5b57\u8282\u7801 ,\uff0c\u8fd9\u4e9b\u5b57\u8282\u7801\u5373\u4e0d\u662f\u4ee5\u5b57\u7b26\u5f62\u5f0f\u4e5f\u4e0d\u662f\u4ee5\u67d0\u79cd\u4e8c\u8fdb\u5236\u683c\u5f0f\u4fdd\u5b58\u5728\u6587\u4ef6\u4e2d\uff0c \u800c\u5728 Python \u8fd0\u884c\u73af\u5883\u4e2d\u3002\u76ee\u524d\u7248\u672c\u662f 1.8. \u652f\u6301\u4e0d\u540c\u7684\u5e73\u53f0\u5b89\u88c5\uff0cwindows \u4e0a\u5b89\u88c5 Pypy \u9700\u8981\u5148\u4e0b\u8f7dhttps:\/\/bitbucket.org\/pypy\/pypy\/downloads\/pypy-1.8-win32.zip\uff0c\u7136\u540e\u89e3\u538b\u5230\u76f8\u5173\u7684\u76ee\u5f55\uff0c\u5e76\u5c06\u89e3\u538b\u540e\u7684\u8def\u5f84\u6dfb\u52a0\u5230\u73af\u5883\u53d8\u91cf path \u4e2d\u5373\u53ef\u3002\u5728\u547d\u4ee4\u884c\u8fd0\u884c pypy\uff0c\u5982\u679c\u51fa\u73b0\u5982\u4e0b\u9519\u8bef\uff1a\u201d\u6ca1\u6709\u627e\u5230 MSVCR100.dll, \u56e0\u6b64\u8fd9\u4e2a\u5e94\u7528\u7a0b\u5e8f\u672a\u80fd\u542f\u52a8\uff0c\u91cd\u65b0\u5b89\u88c5\u5e94\u7528\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u4fee\u590d\u6b64\u95ee\u9898\u201d\uff0c\u5219\u8fd8\u9700\u8981\u5728\u5fae\u8f6f\u7684\u5b98\u7f51\u4e0a\u4e0b\u8f7d VS 2010 runtime libraries \u89e3\u51b3\u8be5\u95ee\u9898\u3002\u5177\u4f53\u5730\u5740\u4e3ahttp:\/\/www.microsoft.com\/download\/en\/details.aspx?displaylang=en&id=5555<\/p>\n

                                \u5b89\u88c5\u6210\u529f\u540e\u5728\u547d\u4ee4\u884c\u91cc\u8fd0\u884c pypy\uff0c\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n

                                  \n
                                1. C:\\Documents\u00a0and\u00a0Settings\\Administrator>pypy<\/li>\n
                                2. \u00a0Python\u00a02.7.2\u00a0(0e28b379d8b3,\u00a0Feb\u00a009\u00a02012,\u00a018:31:47)<\/li>\n
                                3. \u00a0[PyPy\u00a01.8.0\u00a0with\u00a0MSC\u00a0v.1500\u00a032\u00a0bit]\u00a0on\u00a0win32<\/li>\n
                                4. \u00a0Type\u00a0“help”,\u00a0“copyright”,\u00a0“credits”\u00a0or\u00a0“license”\u00a0for\u00a0more\u00a0information.<\/li>\n
                                5. \u00a0And\u00a0now\u00a0for\u00a0something\u00a0completely\u00a0different:\u00a0“PyPy\u00a0is\u00a0vast,\u00a0and\u00a0contains<\/li>\n
                                6. \u00a0multitudes”<\/li>\n
                                7. \u00a0>>>><\/li>\n<\/ol>\n

                                  \u4ee5\u6e05\u53555 \u7684\u5faa\u73af\u4e3a\u4f8b\u5b50\uff0c\u4f7f\u7528 python \u548c pypy \u5206\u522b\u8fd0\u884c\uff0c\u5f97\u5230\u7684\u8fd0\u884c\u7ed3\u679c\u5206\u522b\u5982\u4e0b\uff1a<\/p>\n

                                    \n
                                  1. C:\\Documents\u00a0and\u00a0Settings\\Administrator\\\u00a0\u684c\u9762\u00a0\\doc\\python>pypy\u00a0loop.py<\/li>\n
                                  2. \u00a0total\u00a0run\u00a0time:<\/li>\n
                                  3. \u00a08.42199993134<\/li>\n
                                  4. C:\\Documents\u00a0and\u00a0Settings\\Administrator\\\u00a0\u684c\u9762\u00a0\\doc\\python>python\u00a0loop.py<\/li>\n
                                  5. \u00a0total\u00a0run\u00a0time:<\/li>\n
                                  6. \u00a0106.391000032<\/li>\n<\/ol>\n

                                    \u53ef\u89c1\u4f7f\u7528 pypy \u6765\u7f16\u8bd1\u548c\u8fd0\u884c\u7a0b\u5e8f\uff0c\u5176\u6548\u7387\u5927\u5927\u7684\u63d0\u9ad8\u3002<\/p>\n

                                    Cython<\/p>\n

                                    Cython \u662f\u7528 python \u5b9e\u73b0\u7684\u4e00\u79cd\u8bed\u8a00\uff0c\u53ef\u4ee5\u7528\u6765\u5199 python \u6269\u5c55\uff0c\u7528\u5b83\u5199\u51fa\u6765\u7684\u5e93\u90fd\u53ef\u4ee5\u901a\u8fc7 import \u6765\u8f7d\u5165\uff0c\u6027\u80fd\u4e0a\u6bd4 python \u7684\u5feb\u3002cython \u91cc\u53ef\u4ee5\u8f7d\u5165 python \u6269\u5c55 ( \u6bd4\u5982 import math)\uff0c\u4e5f\u53ef\u4ee5\u8f7d\u5165 c \u7684\u5e93\u7684\u5934\u6587\u4ef6 ( \u6bd4\u5982 :cdef extern from \u201cmath.h\u201d)\uff0c\u53e6\u5916\u4e5f\u53ef\u4ee5\u7528\u5b83\u6765\u5199 python \u4ee3\u7801\u3002\u5c06\u5173\u952e\u90e8\u5206\u91cd\u5199\u6210 C \u6269\u5c55\u6a21\u5757<\/p>\n

                                    Linux Cpython \u7684\u5b89\u88c5\uff1a<\/strong><\/p>\n

                                    \u7b2c\u4e00\u6b65\uff1a\u4e0b\u8f7d<\/p>\n

                                      \n
                                    1. [root@v5254085f259\u00a0cpython]#\u00a0wget\u00a0-N\u00a0http:\/\/cython.org\/release\/Cython-0.15.1.zip<\/li>\n
                                    2. \u00a0–2012-04-16\u00a022:08:35–\u00a0http:\/\/cython.org\/release\/Cython-0.15.1.zip<\/li>\n
                                    3. \u00a0Resolving\u00a0cython.org…\u00a0128.208.160.197<\/li>\n
                                    4. \u00a0Connecting\u00a0to\u00a0cython.org|128.208.160.197|:80…\u00a0connected.<\/li>\n
                                    5. \u00a0HTTP\u00a0request\u00a0sent,\u00a0awaiting\u00a0response…\u00a0200\u00a0OK<\/li>\n
                                    6. \u00a0Length:\u00a02200299\u00a0(2.1M)\u00a0[application\/zip]<\/li>\n
                                    7. \u00a0Saving\u00a0to:\u00a0`Cython-0.15.1.zip’<\/li>\n
                                    8. 100%[======================================>]\u00a02,200,299\u00a01.96M\/s\u00a0in\u00a01.1s<\/li>\n
                                    9. 2012-04-16\u00a022:08:37\u00a0(1.96\u00a0MB\/s)\u00a0–\u00a0`Cython-0.15.1.zip’\u00a0saved\u00a0[2200299\/2200299]<\/li>\n<\/ol>\n

                                      \u7b2c\u4e8c\u6b65\uff1a\u89e3\u538b<\/p>\n

                                        \n
                                      1. [root@v5254085f259\u00a0cpython]#\u00a0unzip\u00a0-o\u00a0Cython-0.15.1.zip<\/li>\n<\/ol>\n

                                        \u7b2c\u4e09\u6b65\uff1a\u5b89\u88c5<\/p>\n

                                          \n
                                        1. python\u00a0setup.py\u00a0install<\/li>\n<\/ol>\n

                                          \u5b89\u88c5\u5b8c\u6210\u540e\u76f4\u63a5\u8f93\u5165 cython\uff0c\u5982\u679c\u51fa\u73b0\u5982\u4e0b\u5185\u5bb9\u5219\u8868\u660e\u5b89\u88c5\u6210\u529f\u3002<\/p>\n

                                            \n
                                          1. [root@v5254085f259\u00a0Cython-0.15.1]#\u00a0cython<\/li>\n
                                          2. Cython\u00a0(http:\/\/cython.org)\u00a0is\u00a0a\u00a0compiler\u00a0for\u00a0code\u00a0written\u00a0in\u00a0the<\/li>\n
                                          3. Cython\u00a0language.\u00a0\u00a0Cython\u00a0is\u00a0based\u00a0on\u00a0Pyrex\u00a0by\u00a0Greg\u00a0Ewing.<\/li>\n
                                          4. <\/li>\n
                                          5. Usage:\u00a0cython\u00a0[options]\u00a0sourcefile.{pyx,py}\u00a0…<\/li>\n
                                          6. <\/li>\n
                                          7. Options:<\/li>\n
                                          8. \u00a0-V,\u00a0–version\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Display\u00a0version\u00a0number\u00a0of\u00a0cython\u00a0compiler<\/li>\n
                                          9. \u00a0-l,\u00a0–create-listing\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Write\u00a0error\u00a0messages\u00a0to\u00a0a\u00a0listing\u00a0file<\/li>\n
                                          10. \u00a0-I,\u00a0–include-dir\u00a0<directory>\u00a0\u00a0Search\u00a0for\u00a0include\u00a0files\u00a0in\u00a0named\u00a0directory<\/li>\n
                                          11. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0(multiple\u00a0include\u00a0directories\u00a0are\u00a0allowed).<\/li>\n
                                          12. \u00a0-o,\u00a0–output-file\u00a0<filename>\u00a0\u00a0\u00a0Specify\u00a0name\u00a0of\u00a0generated\u00a0C\u00a0file<\/li>\n
                                          13. \u00a0-t,\u00a0–timestamps\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Only\u00a0compile\u00a0newer\u00a0source\u00a0files<\/li>\n
                                          14. \u00a0-f,\u00a0–force\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Compile\u00a0all\u00a0source\u00a0files\u00a0(overrides\u00a0implied\u00a0-t)<\/li>\n
                                          15. \u00a0-q,\u00a0–quiet\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Don’t\u00a0print\u00a0module\u00a0names\u00a0in\u00a0recursive\u00a0mode<\/li>\n
                                          16. \u00a0-v,\u00a0–verbose\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Be\u00a0verbose,\u00a0print\u00a0file\u00a0names\u00a0on\u00a0multiple\u00a0compil\u00a0ation<\/li>\n
                                          17. \u00a0-p,\u00a0–embed-positions\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0If\u00a0specified,\u00a0the\u00a0positions\u00a0in\u00a0Cython\u00a0files\u00a0of\u00a0each<\/li>\n
                                          18. \u00a0function\u00a0definition\u00a0is\u00a0embedded\u00a0in\u00a0its\u00a0docstring.<\/li>\n
                                          19. \u00a0–cleanup\u00a0<level><\/li>\n
                                          20. \u00a0Release\u00a0interned\u00a0objects\u00a0on\u00a0python\u00a0exit,\u00a0for\u00a0memory\u00a0debugging.<\/li>\n
                                          21. \u00a0\u00a0\u00a0Level\u00a0indicates\u00a0aggressiveness,\u00a0default\u00a00\u00a0releases\u00a0nothing.<\/li>\n
                                          22. \u00a0-w,\u00a0–working\u00a0<directory><\/li>\n
                                          23. \u00a0Sets\u00a0the\u00a0working\u00a0directory\u00a0for\u00a0Cython\u00a0(the\u00a0directory\u00a0modules\u00a0are\u00a0searched\u00a0from)<\/li>\n
                                          24. \u00a0–gdb\u00a0Output\u00a0debug\u00a0information\u00a0for\u00a0cygdb<\/li>\n
                                          25. \u00a0-D,\u00a0–no-docstrings<\/li>\n
                                          26. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Strip\u00a0docstrings\u00a0from\u00a0the\u00a0compiled\u00a0module.<\/li>\n
                                          27. \u00a0-a,\u00a0–annotate<\/li>\n
                                          28. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Produce\u00a0a\u00a0colorized\u00a0HTML\u00a0version\u00a0of\u00a0the\u00a0source.<\/li>\n
                                          29. \u00a0–line-directives<\/li>\n
                                          30. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Produce\u00a0#line\u00a0directives\u00a0pointing\u00a0to\u00a0the\u00a0.pyx\u00a0source<\/li>\n
                                          31. \u00a0–cplus<\/li>\n
                                          32. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Output\u00a0a\u00a0C++\u00a0rather\u00a0than\u00a0C\u00a0file.<\/li>\n
                                          33. \u00a0–embed[=<method_name>]<\/li>\n
                                          34. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Generate\u00a0a\u00a0main()\u00a0function\u00a0that\u00a0embeds\u00a0the\u00a0Python\u00a0interpreter.<\/li>\n
                                          35. \u00a0-2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Compile\u00a0based\u00a0on\u00a0Python-2\u00a0syntax\u00a0and\u00a0code\u00a0seman\u00a0tics.<\/li>\n
                                          36. \u00a0-3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Compile\u00a0based\u00a0on\u00a0Python-3\u00a0syntax\u00a0and\u00a0code\u00a0seman\u00a0tics.<\/li>\n
                                          37. \u00a0–fast-fail\u00a0\u00a0\u00a0\u00a0\u00a0Abort\u00a0the\u00a0compilation\u00a0on\u00a0the\u00a0first\u00a0error<\/li>\n
                                          38. \u00a0–warning-error,\u00a0-Werror\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Make\u00a0all\u00a0warnings\u00a0into\u00a0errors<\/li>\n
                                          39. \u00a0–warning-extra,\u00a0-Wextra\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Enable\u00a0extra\u00a0warnings<\/li>\n
                                          40. \u00a0-X,\u00a0–directive\u00a0<name>=<value><\/li>\n
                                          41. \u00a0[,<name=value,…]\u00a0Overrides\u00a0a\u00a0compiler\u00a0directive<\/li>\n<\/ol>\n

                                            \u5176\u4ed6\u5e73\u53f0\u4e0a\u7684\u5b89\u88c5\u53ef\u4ee5\u53c2\u8003\u6587\u6863\uff1ahttp:\/\/docs.cython.org\/src\/quickstart\/install.html<\/p>\n

                                            Cython \u4ee3\u7801\u4e0e python \u4e0d\u540c\uff0c\u5fc5\u987b\u5148\u7f16\u8bd1\uff0c\u7f16\u8bd1\u4e00\u822c\u9700\u8981\u7ecf\u8fc7\u4e24\u4e2a\u9636\u6bb5\uff0c\u5c06 pyx \u6587\u4ef6\u7f16\u8bd1\u4e3a .c \u6587\u4ef6\uff0c\u518d\u5c06 .c \u6587\u4ef6\u7f16\u8bd1\u4e3a .so \u6587\u4ef6\u3002\u7f16\u8bd1\u6709\u591a\u79cd\u65b9\u6cd5\uff1a<\/p>\n

                                            \u901a\u8fc7\u547d\u4ee4\u884c\u7f16\u8bd1\uff1a<\/strong><\/p>\n

                                            \u5047\u8bbe\u6709\u5982\u4e0b\u6d4b\u8bd5\u4ee3\u7801\uff0c\u4f7f\u7528\u547d\u4ee4\u884c\u7f16\u8bd1\u4e3a .c \u6587\u4ef6\u3002<\/p>\n

                                              \n
                                            1. def\u00a0sum(int\u00a0a,int\u00a0b):<\/li>\n
                                            2. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0print\u00a0a+b<\/li>\n
                                            3. <\/li>\n
                                            4. \u00a0[root@v5254085f259\u00a0test]#\u00a0cython\u00a0sum.pyx<\/li>\n
                                            5. \u00a0[root@v5254085f259\u00a0test]#\u00a0ls<\/li>\n
                                            6. \u00a0total\u00a076<\/li>\n
                                            7. \u00a04\u00a0drwxr-xr-x\u00a02\u00a0root\u00a0root\u00a0\u00a04096\u00a0Apr\u00a017\u00a002:45\u00a0.<\/li>\n
                                            8. \u00a04\u00a0drwxr-xr-x\u00a04\u00a0root\u00a0root\u00a0\u00a04096\u00a0Apr\u00a016\u00a022:20\u00a0..<\/li>\n
                                            9. \u00a04\u00a0-rw-r–r–\u00a01\u00a0root\u00a0root\u00a0\u00a0\u00a0\u00a035\u00a0Apr\u00a017\u00a002:45\u00a01<\/li>\n
                                            10. \u00a060\u00a0-rw-r–r–\u00a01\u00a0root\u00a0root\u00a055169\u00a0Apr\u00a017\u00a002:45\u00a0sum.c<\/li>\n
                                            11. \u00a04\u00a0-rw-r–r–\u00a01\u00a0root\u00a0root\u00a0\u00a0\u00a0\u00a035\u00a0Apr\u00a017\u00a002:45\u00a0sum.pyx<\/li>\n<\/ol>\n

                                              \u5728 linux \u4e0a\u5229\u7528 gcc \u7f16\u8bd1\u4e3a .so \u6587\u4ef6\uff1a<\/p>\n

                                                \n
                                              1. [root@v5254085f259\u00a0test]#\u00a0gcc\u00a0-shared\u00a0-pthread\u00a0-fPIC\u00a0-fwrapv\u00a0-O2<\/li>\n
                                              2. -Wall\u00a0-fno-strict-aliasing\u00a0-I\/usr\/include\/python2.4\u00a0-o\u00a0sum.so\u00a0sum.c<\/li>\n
                                              3. [root@v5254085f259\u00a0test]#\u00a0ls<\/li>\n
                                              4. total\u00a096<\/li>\n
                                              5. 4\u00a0drwxr-xr-x\u00a02\u00a0root\u00a0root\u00a0\u00a04096\u00a0Apr\u00a017\u00a002:47\u00a0.<\/li>\n
                                              6. 4\u00a0drwxr-xr-x\u00a04\u00a0root\u00a0root\u00a0\u00a04096\u00a0Apr\u00a016\u00a022:20\u00a0..<\/li>\n
                                              7. 4\u00a0-rw-r–r–\u00a01\u00a0root\u00a0root\u00a0\u00a0\u00a0\u00a035\u00a0Apr\u00a017\u00a002:45\u00a01<\/li>\n
                                              8. 60\u00a0-rw-r–r–\u00a01\u00a0root\u00a0root\u00a055169\u00a0Apr\u00a017\u00a002:45\u00a0sum.c<\/li>\n
                                              9. 4\u00a0-rw-r–r–\u00a01\u00a0root\u00a0root\u00a0\u00a0\u00a0\u00a035\u00a0Apr\u00a017\u00a002:45\u00a0sum.pyx<\/li>\n
                                              10. 20\u00a0-rwxr-xr-x\u00a01\u00a0root\u00a0root\u00a020307\u00a0Apr\u00a017\u00a002:47\u00a0sum.so<\/li>\n<\/ol>\n
                                                \n
                                                \n

                                                 <\/p>\n

                                                \u4f7f\u7528 distutils \u7f16\u8bd1<\/strong><\/p>\n

                                                \u5efa\u7acb\u4e00\u4e2a setup.py \u7684\u811a\u672c\uff1a<\/p>\n

                                                  \n
                                                1. from\u00a0distutils.core\u00a0import\u00a0setup<\/li>\n
                                                2. \u00a0from\u00a0distutils.extension\u00a0import\u00a0Extension<\/li>\n
                                                3. \u00a0from\u00a0Cython.Distutils\u00a0import\u00a0build_ext<\/li>\n
                                                4. <\/li>\n
                                                5. \u00a0ext_modules\u00a0=\u00a0[Extension(“sum”,\u00a0[“sum.pyx”])]<\/li>\n
                                                6. <\/li>\n
                                                7. \u00a0setup(<\/li>\n
                                                8. \u00a0\u00a0\u00a0\u00a0name\u00a0=\u00a0‘sum\u00a0app’,<\/li>\n
                                                9. \u00a0\u00a0\u00a0\u00a0cmdclass\u00a0=\u00a0{‘build_ext’:\u00a0build_ext},<\/li>\n
                                                10. \u00a0\u00a0\u00a0\u00a0ext_modules\u00a0=\u00a0ext_modules<\/li>\n
                                                11. \u00a0)<\/li>\n
                                                12. <\/li>\n
                                                13. \u00a0[root@v5254085f259\u00a0test]#\u00a0\u00a0python\u00a0setup.py\u00a0build_ext\u00a0–inplace<\/li>\n
                                                14. \u00a0running\u00a0build_ext<\/li>\n
                                                15. \u00a0cythoning\u00a0sum.pyx\u00a0to\u00a0sum.c<\/li>\n
                                                16. \u00a0building\u00a0‘sum’\u00a0extension<\/li>\n
                                                17. \u00a0gcc\u00a0-pthread\u00a0-fno-strict-aliasing\u00a0-fPIC\u00a0-g\u00a0-O2\u00a0-DNDEBUG\u00a0-g\u00a0-fwrapv\u00a0-O3<\/li>\n
                                                18. \u00a0-Wall\u00a0-Wstrict-prototypes\u00a0-fPIC\u00a0-I\/opt\/ActivePython-2.7\/include\/python2.7<\/li>\n
                                                19. \u00a0\u00a0-c\u00a0sum.c\u00a0-o\u00a0build\/temp.linux-x86_64-2.7\/sum.o<\/li>\n
                                                20. \u00a0gcc\u00a0-pthread\u00a0-shared\u00a0build\/temp.linux-x86_64-2.7\/sum.o<\/li>\n
                                                21. \u00a0-o\u00a0\/root\/cpython\/test\/sum.so<\/li>\n<\/ol>\n

                                                  \u7f16\u8bd1\u5b8c\u6210\u4e4b\u540e\u53ef\u4ee5\u5bfc\u5165\u5230 python \u4e2d\u4f7f\u7528\uff1a<\/p>\n

                                                    \n
                                                  1. [root@v5254085f259\u00a0test]#\u00a0python<\/li>\n
                                                  2. ActivePython\u00a02.7.2.5\u00a0(ActiveState\u00a0Software\u00a0Inc.)\u00a0based\u00a0on<\/li>\n
                                                  3. Python\u00a02.7.2\u00a0(default,\u00a0Jun\u00a024\u00a02011,\u00a011:24:26)<\/li>\n
                                                  4. [GCC\u00a04.0.2\u00a020051125\u00a0(Red\u00a0Hat\u00a04.0.2-8)]\u00a0on\u00a0linux2<\/li>\n
                                                  5. Type\u00a0“help”,\u00a0“copyright”,\u00a0“credits”\u00a0or\u00a0“license”\u00a0for\u00a0more\u00a0information.<\/li>\n
                                                  6. >>>\u00a0import\u00a0pyximport;\u00a0pyximport.install()<\/li>\n
                                                  7. >>>\u00a0import\u00a0sum<\/li>\n
                                                  8. >>>\u00a0sum.sum(1,3)<\/li>\n<\/ol>\n

                                                    \u4e0b\u9762\u6765\u8fdb\u884c\u4e00\u4e2a\u7b80\u5355\u7684\u6027\u80fd\u6bd4\u8f83\uff1a<\/p>\n<\/div>\n<\/div>\n

                                                    \u6e05\u5355 9. Cython \u6d4b\u8bd5\u4ee3\u7801<\/strong><\/p>\n

                                                      \n
                                                    1. from\u00a0time\u00a0import\u00a0time<\/li>\n
                                                    2. \u00a0def\u00a0test(int\u00a0n):<\/li>\n
                                                    3. \u00a0cdef\u00a0int\u00a0a\u00a0=0<\/li>\n
                                                    4. \u00a0cdef\u00a0int\u00a0i<\/li>\n
                                                    5. \u00a0for\u00a0i\u00a0in\u00a0xrange(n):<\/li>\n
                                                    6. \u00a0a+=\u00a0i<\/li>\n
                                                    7. \u00a0return\u00a0a<\/li>\n
                                                    8. t\u00a0=\u00a0time()<\/li>\n
                                                    9. \u00a0test(10000000)<\/li>\n
                                                    10. \u00a0print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
                                                    11. \u00a0print\u00a0time()-t<\/li>\n<\/ol>\n

                                                      \u6d4b\u8bd5\u7ed3\u679c\uff1a<\/p>\n

                                                        \n
                                                      1. [GCC\u00a04.0.2\u00a020051125\u00a0(Red\u00a0Hat\u00a04.0.2-8)]\u00a0on\u00a0linux2<\/li>\n
                                                      2. \u00a0Type\u00a0“help”,\u00a0“copyright”,\u00a0“credits”\u00a0or\u00a0“license”\u00a0for\u00a0more\u00a0information.<\/li>\n
                                                      3. \u00a0>>>\u00a0import\u00a0pyximport;\u00a0pyximport.install()<\/li>\n
                                                      4. \u00a0>>>\u00a0import\u00a0ctest<\/li>\n
                                                      5. \u00a0total\u00a0run\u00a0time:<\/li>\n
                                                      6. \u00a00.00714015960693<\/li>\n<\/ol>\n

                                                        \u6e05\u5355 10. Python \u6d4b\u8bd5\u4ee3\u7801<\/strong><\/p>\n

                                                          \n
                                                        1. from\u00a0time\u00a0import\u00a0time<\/li>\n
                                                        2. \u00a0def\u00a0test(n):<\/li>\n
                                                        3. \u00a0a\u00a0=0;<\/li>\n
                                                        4. \u00a0for\u00a0i\u00a0in\u00a0xrange(n):<\/li>\n
                                                        5. \u00a0a+=\u00a0i<\/li>\n
                                                        6. \u00a0return\u00a0a<\/li>\n
                                                        7. t\u00a0=\u00a0time()<\/li>\n
                                                        8. \u00a0test(10000000)<\/li>\n
                                                        9. \u00a0print\u00a0“total\u00a0run\u00a0time:”<\/li>\n
                                                        10. \u00a0print\u00a0time()-t<\/li>\n
                                                        11. [root@v5254085f259\u00a0test]#\u00a0python\u00a0test.py<\/li>\n
                                                        12. \u00a0total\u00a0run\u00a0time:<\/li>\n
                                                        13. \u00a00.971596002579<\/li>\n<\/ol>\n

                                                          \u4ece\u4e0a\u8ff0\u5bf9\u6bd4\u53ef\u4ee5\u770b\u5230\u4f7f\u7528 Cython \u7684\u901f\u5ea6\u63d0\u9ad8\u4e86\u5c06\u8fd1 100 \u591a\u500d\u3002<\/p>\n

                                                          \u603b\u7ed3<\/strong><\/p>\n

                                                          \u672c\u6587\u521d\u6b65\u63a2\u8ba8\u4e86 python \u5e38\u89c1\u7684\u6027\u80fd\u4f18\u5316\u6280\u5de7\u4ee5\u53ca\u5982\u4f55\u501f\u52a9\u5de5\u5177\u6765\u5b9a\u4f4d\u548c\u5206\u6790\u7a0b\u5e8f\u7684\u6027\u80fd\u74f6\u9888\uff0c\u5e76\u63d0\u4f9b\u4e86\u76f8\u5173\u53ef\u4ee5\u8fdb\u884c\u6027\u80fd\u4f18\u5316\u7684\u5de5\u5177\u6216\u8bed\u8a00\uff0c\u5e0c\u671b\u80fd\u591f\u66f4\u76f8\u5173\u4eba\u5458\u4e00\u4e9b\u53c2\u8003\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                                                          \u4ee3\u7801\u4f18\u5316\u80fd\u591f\u8ba9\u7a0b\u5e8f\u8fd0\u884c\u66f4\u5feb\uff0c\u5b83\u662f\u5728\u4e0d\u6539\u53d8\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u679c\u7684\u60c5\u51b5\u4e0b\u4f7f\u5f97\u7a0b\u5e8f\u7684\u8fd0\u884c\u6548\u7387\u66f4 …<\/p>\n

                                                          \u7ee7\u7eed\u9605\u8bfb »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[48],"class_list":["post-823","post","type-post","status-publish","format-standard","hentry","tag-python"],"views":796,"_links":{"self":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts\/823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/comments?post=823"}],"version-history":[{"count":0,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts\/823\/revisions"}],"wp:attachment":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/media?parent=823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/categories?post=823"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/tags?post=823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}