{"id":148653,"date":"2019-07-03T08:09:36","date_gmt":"2019-07-03T00:09:36","guid":{"rendered":"https:\/\/lrxjmw.cn\/?p=148653"},"modified":"2019-06-21T09:11:05","modified_gmt":"2019-06-21T01:11:05","slug":"mach-re-python","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/mach-re-python.html","title":{"rendered":"python\u6a21\u5f0f\u5339\u914d\u4e0e\u6b63\u5219\u8868\u8fbe\u5f0f"},"content":{"rendered":"
\u5047\u5b9a\u60f3\u8981\u5c06\u533a\u53f7\u4ece\u7535\u8bdd\u53f7\u7801\u4e2d\u5206\u79bb\u3002\u6dfb\u52a0\u62ec\u53f7\u5c06\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u521b\u5efa\u201c\u5206\u7ec4\u201d\uff1a(\\d\\d\\d)-(\\d\\d\\d-\\d\\d\\d)\u3002\u7136\u540e\u4f7f\u7528group()\u5339\u914d\u5bf9\u8c61\u65b9\u6cd5\uff0c\u4ece\u4e00\u4e2a\u5206\u7ec4\u4e2d\u83b7\u53d6\u5339\u914d\u7684\u6587\u672c\u3002
\n\u6b63\u5219\u8868\u8fbe\u5f0f\u5b57\u7b26\u4e32\u4e2d\u7684\u7b2c\u4e00\u5bf9\u62ec\u53f7\u662f\u7b2c1\u7ec4\u3002\u7b2c\u4e8c\u5bf9\u62ec\u53f7\u662f\u7b2c2\u7ec4\u3002\u5411group()\u5339\u914d\u5bf9\u8c61\u65b9\u6cd5\u4f20\u5165\u6574\u65701\u6216\u80052\uff0c\u5c31\u53ef\u4ee5\u5339\u914d\u6587\u672c\u7684\u4e0d\u540c\u90e8\u5206\u3002\u5411group()\u65b9\u6cd5\u4e2d\u4f20\u51650\u6216\u8005\u4e0d\u4f20\u5165\u53c2\u6570\uff0c\u5c06\u8fd4\u56de\u6574\u4e2a\u5339\u914d\u7684\u6587\u672c\u3002<\/p>\n
>>> <\/span>import<\/span> re\r\n>>> <\/span>phoneNumberRegex = re.compile(r'(\\d\\d\\d)-(\\d\\d\\d-\\d\\d\\d)'<\/span>)\r\n>>> <\/span>mo = phoneNumberRegex.search('my number is 415-555-4242.'<\/span>)\r\n>>> <\/span>mo.group(1<\/span>)\r\n'415'<\/span>\r\n>>> <\/span>mo.groups()\r\n('415'<\/span>, '555-424'<\/span>)\r\n<\/code><\/pre>\n\n- \u5982\u679c\u8981\u4e00\u6b21\u83b7\u53d6\u6240\u6709\u5206\u7ec4\uff0c\u90a3\u4e48\u4f7f\u7528groups()\u65b9\u6cd5<\/li>\n
- \u5b57\u7b26\u201c|\u201d\u79f0\u4e3a\u7ba1\u9053\u3002\u5e0c\u671b\u5339\u914d\u8bb8\u591a\u8868\u8fbe\u5f0f\u4e2d\u7684\u4e00\u4e2a\u65f6\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u5b83\u3002<\/li>\n
- \u5982\u679c\u67e5\u627e\u7684\u5b57\u7b26\u4e32\u4e2d\uff0c\u4e24\u4e2a\u6216\u8005\u591a\u4e2a\u90fd\u51fa\u73b0\u65f6\uff0c\u7b2c\u4e00\u6b21\u51fa\u73b0\u7684\u5339\u914d\u6587\u672c\u5c06\u4f5c\u4e3aMatch\u5bf9\u8c61\u8fd4\u56de\u3002<\/li>\n<\/ul>\n
>>> <\/span>heroRegex = re.compile(r'batman|tina fey'<\/span>)\r\n>>> <\/span>mo1 = heroRegex.search('batman and tina fey'<\/span>)\r\n>>> <\/span>mo1.group()\r\n'batman'<\/span>\r\n>>> <\/span>mo1 = heroRegex.search(' tina fey and batman '<\/span>)\r\n>>> <\/span>mo1.group()\r\n'tina fey'<\/span>\r\n<\/code><\/pre>\n\u53ef\u4ee5\u8bd5\u7528\u7ba1\u9053\u6765\u5339\u914d\u591a\u4e2a\u6a21\u5f0f\u4e2d\u7684\u4e00\u4e2a\uff0c\u4f5c\u4e3a\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u4e00\u90e8\u5206\u3002<\/p>\n
>>> <\/span>batRegex = re.complie(r'bat(man|mobile|copter|bat)'<\/span>)\r\n>>> <\/span>batRegex = re.compile(r'bat(man|mobile|copter|bat)'<\/span>)\r\n>>> <\/span>mo = batRegex.search('batmobile lost a wheel'<\/span>)\r\n>>> <\/span>mo.group()\r\n'batmobile'<\/span>\r\n>>> <\/span>mo.group(1<\/span>)\r\n'mobile'<\/span>\r\n>>> <\/span>\r\n<\/code><\/pre>\n\u7528\u95ee\u53f7\u5b9e\u73b0\u53ef\u9009\u5339\u914d<\/strong><\/strong><\/span><\/div>\n\u6709\u65f6\u5019\uff0c\u5411\u5339\u914d\u7684\u6a21\u5f0f\u662f\u53ef\u9009\u7684\u3002\u5c31\u662f\u8bf4\uff0c\u4e0d\u8bba\u8fd9\u6bb5\u6587\u672c\u5728\u4e0d\u5728\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u90fd\u4f1a\u8ba4\u4e3a\u5339\u914d\u3002\u5b57\u7b26\uff1f\u8868\u660e\u5b83\u524d\u9762\u7684\u5206\u7ec4\u5728\u8fd9\u4e2a\u6a21\u5f0f\u4e2d\u662f\u53ef\u9009\u7684\u3002<\/p>\n
>>> <\/span>phoneNumberRegex = re.compile(r'(\\d\\d\\d-)?\\d\\d\\d-\\d\\d\\d'<\/span>)\r\n>>> <\/span>mo = phoneNumberRegex.search('my number is 415-555-4242.'<\/span>)\r\n>>> <\/span>mo.group()\r\n'415-555-424'<\/span>\r\n>>> <\/span>mo = phoneNumberRegex.search('my number is 555-4242.'<\/span>)\r\n>>> <\/span>mo.group()\r\n'555-424'<\/span>\r\n<\/code><\/pre>\n\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d(\\d\\d\\d-)?\u90e8\u5206\u8868\u660e\uff0c\u6a21\u5f0f(\\d\\d\\d-)\u662f\u53ef\u9009\u7684\u3002\u4e5f\u5c31\u662f\u5339\u914d\u8fd9\u4e2a\u95ee\u53f7\u4e4b\u524d\u7684\u5206\u7ec4\u96f6\u6b21\u6216\u4e00\u6b21<\/em><\/p>\n\u7528\u661f\u53f7\u5339\u914d\u96f6\u6b21\u6216\u591a\u6b21<\/strong><\/strong><\/span><\/div>\n\u201c*\u201d\u661f\u53f7\u4e4b\u524d\u7684\u5206\u7ec4\uff0c\u53ef\u4ee5\u5728\u6587\u672c\u4e2d\u51fa\u73b0\u4efb\u610f\u6b21\u3002<\/p>\n
\u7528\u52a0\u53f7\u5339\u914d\u4e00\u6b21\u6216\u591a\u6b21<\/strong><\/strong><\/span><\/div>\n\u201c+\u201d\u52a0\u53f7\u4e4b\u524d\u7684\u5206\u533a\uff0c\u81f3\u5c11\u5728\u6587\u672c\u4e2d\u51fa\u73b0\u4e00\u6b21<\/p>\n
\u7528\u82b1\u62ec\u53f7\u5339\u914d\u7279\u5b9a\u7684\u6b21\u6570<\/strong><\/strong><\/span><\/div>\n\u5982\u679c\u60f3\u8981\u4e00\u4e2a\u5206\u7ec4\u91cd\u590d\u7279\u5b9a\u7684\u6b21\u6570\uff0c\u5c31\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u8be5\u5206\u7ec4\u7684\u540e\u9762\uff0c\u8ddf\u4e0a\u753b\u62ec\u53f7\u5305\u56f4\u7684\u6570\u5b57\u3002\u4f8b\u5982\u6b63\u5219\u8868\u8fbe\u5f0f(Ha){3}\u5c06\u5339\u914d\u5b57\u7b26\u4e32'HaHaHa'
\n\u9664\u4e86\u4e00\u4e2a\u6570\u5b57\uff0c\u8fd8\u53ef\u4ee5\u6307\u5b9a\u7ed9\u4e00\u4e2a\u8303\u56f4\uff0c\u5373\u5728\u82b1\u62ec\u53f7\u4e2d\u5199\u4e0b\u4e00\u4e2a\u6700\u5c0f\u503c\u3001\u4e00\u4e2a\u9017\u53f7\u548c\u4e00\u4e2a\u6700\u5927\u503c\u3002\u4f8b\u5982\u5728\u6b63\u5219\u8868\u8fbe(Ha){3,5}\u5c06\u5339\u914d'HaHaHa','HaHaHaHa','HaHaHaHaHaHa'
\n\u4e5f\u53ef\u4ee5\u4e0d\u8c22\u82b1\u62ec\u53f7\u4e2d\u7b2c\u4e00\u4e2a\u6216\u7b2c\u4e8c\u4e2a\u6570\u5b57\uff0c\u4e0d\u9650\u5b9a\u6700\u5c0f\u503c\u6216\u6700\u5927\u503c\u3002\u4f8b\u5982(Ha){3,}\u5c06\u5339\u914d3\u6b21\u6216\u8005\u66f4\u591a\u6b21\u7684\u5b9e\u4f8b\uff0c(Ha){,5}\u5c06\u5339\u914d0\u52305\u6b21\u5b9e\u4f8b\u3002<\/p>\n
\u8d2a\u5fc3\u5339\u914d\u548c\u975e\u8d2a\u5fc3\u5339\u914d<\/strong><\/strong><\/span><\/div>\npython\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u7684\u662f\u201c\u8d2a\u5fc3\u201d\u7684\uff0c\u8fd9\u8868\u793a\u5728\u6709\u4e8c\u610f\u7684\u60c5\u51b5\u4e0b\uff0c\u4ed6\u4eec\u4f1a\u5c3d\u53ef\u80fd\u7684\u5339\u914d\u6700\u957f\u7684\u5b57\u7b26\u4e32\u3002\u82b1\u62ec\u53f7\u7684\u201c\u975e\u8d2a\u5fc3\u201d\u7248\u672c\u5339\u914d\u5c3d\u53ef\u80fd\u6700\u77ed\u7684\u5b57\u7b26\u4e32\uff0c\u5373\u5728\u7ed3\u675f\u7684\u82b1\u62ec\u53f7\u540e\u8ddf\u7740\u4e00\u4e2a\u95ee\u53f7\u3002<\/p>\n
\u95ee\u53f7\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u6709\u4e24\u79cd\u542b\u4e49\uff1a\u58f0\u660e\u975e\u8d2a\u5fc3\u5339\u914d\u6216\u8868\u793a\u53ef\u9009\u7684\u5206\u7ec4\u3002<\/em><\/p>\nfindall()\u65b9\u6cd5<\/strong><\/strong><\/span><\/div>\n\u9664\u4e86search\u65b9\u6cd5\u5916\uff0cRegex\u5bf9\u8c61\u4e5f\u6709\u4e00\u4e2afindall()\u65b9\u6cd5\u3002search()\u5c06\u8fd4\u56de\u4e00\u4e2aMatch\u5bf9\u8c61\uff0c\u5305\u542b\u88ab\u67e5\u627e\u5b57\u7b26\u4e32\u4e2d\u7684\u201c\u7b2c\u4e00\u6b21\u201d\u5339\u914d\u7684\u6587\u672c\uff0c\u800cfindall()\u65b9\u6cd5\u5c06\u8fd4\u56de\u4e00\u7ec4\u5b57\u7b26\u4e32\uff0c\u5305\u542b\u88ab\u67e5\u627e\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u5339\u914d\u3002<\/p>\n
\n- \u5982\u679c\u8c03\u7528\u5728\u4e00\u4e2a\u6ca1\u6709\u5206\u7ec4\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u4e0a\uff0c\u4f8b\u5982\\d\\d\\d-\\d\\d\\d-\\d\\d\\d\\d\uff0c\u65b9\u6cd5findall()\u5c06\u8fd4\u56de\u4e00\u4e2a\u5339\u914d\u5b57\u7b26\u4e32\u7684\u5217\u8868\uff0c\u4f8b\u5982['414-555-9999','212-555-0000']<\/li>\n
- \u5982\u679c\u8c03\u7528\u5728\u4e00\u4e2a\u6709\u5206\u7ec4\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u4e0a\uff0c\u4f8b\u5982(\\d\\d\\d)-(\\d\\d\\d)-(\\d\\d\\d\\d)\uff0c\u65b9\u6cd5findall()\u5c06\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u5143\u7ec4\u5217\u8868\uff08\u6bcf\u4e00\u4e2a\u5206\u7ec4\u5bf9\u5e94\u4e00\u4e2a\u5b57\u7b26\u4e32\uff09\uff0c\u4f8b\u5982[('415','555','1121'),('212','555,'0000)]<\/li>\n<\/ul>\n\u5b57\u7b26\u5206\u7c7b<\/strong><\/strong><\/span><\/div>\n
\n\n\n\u7f29\u5199\u5b57\u7b26\u5206\u7c7b<\/th>\n \u8868\u793a<\/th>\n<\/tr>\n<\/thead>\n \n\n\\d<\/td>\n 0\u52309\u7684\u4efb\u4f55\u6570\u5b57<\/td>\n<\/tr>\n \n\\D<\/td>\n \u96640\u52309\u7684\u6570\u5b57\u4ee5\u5916\u7684\u4efb\u4f55\u5b57\u7b26<\/td>\n<\/tr>\n \n\\w<\/td>\n \u4efb\u4f55\u5b57\u6bcd\u3001\u6570\u5b57\u6216\u4e0b\u5212\u7ebf\u5b57\u7b26\uff08\u53ef\u4ee5\u8ba4\u4e3a\u662f\u5339\u914d\u201c\u5355\u8bcd\u201d\u5b57\u7b26<\/td>\n<\/tr>\n \n\\W<\/td>\n \u9664\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u4e0b\u5212\u7ebf\u4ee5\u5916\u7684\u4efb\u4f55\u5b57\u7b26<\/td>\n<\/tr>\n \n\\s<\/td>\n \u7a7a\u683c\u3001\u5236\u8868\u7b26\u6216\u6362\u884c\u7b26\uff08\u53ef\u4ee5\u8ba4\u4e3a\u662f\u5339\u914d\u201c\u7a7a\u767d\u201d\u5b57\u7b26\uff09<\/td>\n<\/tr>\n \n\\S<\/td>\n \u9664\u7a7a\u683c\u3001\u5236\u8868\u7b26\u548c\u6362\u884c\u7b26\u4ee5\u5916\u7684\u4efb\u4f55\u5b57\u7b26<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u5efa\u7acb\u81ea\u5df1\u7684\u5b57\u7b26\u5206\u7c7b<\/strong><\/strong><\/span><\/div>\n\n- \u7528\u65b9\u62ec\u53f7\u5b9a\u4e49\u81ea\u5df1\u7684\u5b57\u7b26\u5206\u7c7b\u3002\u4f8b\u5982\uff0c\u5b57\u7b26\u5206\u7c7b[adiouAEIOU]\u5c06\u5339\u914d\u6240\u6709\u539f\u56e0\u5b57\u7b26\uff0c\u4e0d\u8bba\u5927\u5c0f\u5199\u3002<\/li>\n
- \u4e5f\u53ef\u4ee5\u77f3\u6c38\u7ea2\u77ed\u6a2a\u7ebf\u8868\u793a\u5b57\u6bcd\u6216\u8005\u6570\u5b57\u7684\u8303\u56f4\u3002\u4f8b\u5982[0-5]\u53ea\u5339\u914d\u6570\u5b570\u52305<\/li>\n
- \u5728\u65b9\u62ec\u53f7\u5185\uff0c\u666e\u901a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u7b26\u53f7\u4e0d\u4f1a\u88ab\u89e3\u91ca\u3002<\/em><\/li>\n
- \u901a\u8fc7\u5728\u5b57\u7b26\u5206\u7c7b\u7684\u5de6\u65b9\u62ec\u53f7\u540e\u52a0\u4e0a\u4e00\u4e2a\u63d2\u5165\u5b57\u7b26(^)\uff0c\u5c31\u53ef\u4ee5\u5f97\u5230\u201c\u975e\u5b57\u7b26\u7c7b\u201d\u3002\u975e\u5b57\u7b26\u7c7b\u5c06\u5339\u914d\u4e0d\u5728\u8fd9\u4e2a\u5b57\u7b26\u7c7b\u4e2d\u7684\u6240\u6709\u5b57\u7b26\u3002<\/li>\n<\/ul>\n
#\u5339\u914d\u6240\u6709\u975e\u5143\u97f3\u5b57\u7b26<\/span><\/span>\r\n>>> <\/span>consonantRegex = re.compile(r'[^aeiouAEIOU]'<\/span>)\r\n>>> <\/span>consonantRegex.findall('RoboCop eats baby food. BABY FOOD.'<\/span>)\r\n['R'<\/span>, 'b'<\/span>, 'C'<\/span>, 'p'<\/span>, ' '<\/span>, 't'<\/span>, 's'<\/span>, ' '<\/span>, 'b'<\/span>, 'b'<\/span>, 'y'<\/span>, ' '<\/span>, 'f'<\/span>, 'd'<\/span>, '.'<\/span>, ' '<\/span>, 'B'<\/span>, 'B'<\/span>, 'Y'<\/span>, ' '<\/span>, 'F'<\/span>, 'D'<\/span>, '.'<\/span>]\r\n<\/code><\/pre>\n\u63d2\u5165\u5b57\u7b26\u548c\u7f8e\u5143\u5b57\u7b26<\/strong><\/strong><\/span><\/div>\n\u53ef\u4ee5\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5f00\u59cb\u5904\u4f7f\u7528\u63d2\u5165\u7b26\u53f7(^ )\uff0c\u8868\u660e\u5339\u914d\u5fc5\u987b\u53d1\u751f\u5728\u88ab\u67e5\u627e\u6587\u672c\u5f00\u59cb\u5904\u3002\u7c7b\u4f3c\u5730\uff0c\u53ef\u4ee5\u518d\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u672b\u5c3e\u52a0\u4e0a\u7f8e\u5143\u7b26\u53f7\uff08$\uff09\uff0c\u8868\u793a\u8be5\u5b57\u7b26\u4e32\u5fc5\u987b\u4ee5\u8fd9\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u6a21\u5f0f\u7ed3\u675f\u3002\u53ef\u4ee5\u540c\u65f6\u4f7f\u7528^\u548c$\uff0c\u8868\u660e\u6574\u4e2a\u5b57\u7b26\u4e32\u5fc5\u987b\u5339\u914d\u8be5\u6a21\u5f0f\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u53ea\u5339\u914d\u8be5\u5b57\u7b26\u4e32\u7684\u67d0\u4e2a\u5b50\u96c6\u662f\u4e0d\u591f\u7684\u3002<\/p>\n
>>> <\/span>beginsWithHello = re.compile(r'^Hello'<\/span>)\r\n>>> <\/span>beginsWithHello.search('Hello world!'<\/span>)\r\n<_sre.SRE_Match object; span=(0<\/span>, 5<\/span>), match='Hello'<\/span>>\r\n>>> <\/span>hh=beginsWithHello.search('Hello world!'<\/span>)\r\n>>> <\/span>hh.group()\r\n'Hello'<\/span>\r\n>>> <\/span>endsWithNumber = re.compile(r'\\d$'<\/span>)\r\n>>> <\/span>ss=endsWithNumber.search('Your number is 42'<\/span>)\r\n>>> <\/span>ss.group()\r\n'2'<\/span>\r\n>>> <\/span>wholeStringIsNum = re.compile(r'^\\d+$'<\/span>)\r\n>>> <\/span>rr=wholeStringIsNum.search('1234567890'<\/span>)\r\n>>> <\/span>rr.group()\r\n'1234567890'<\/span>\r\n<\/code><\/pre>\n\u901a\u914d\u5b57\u7b26<\/strong><\/strong><\/span><\/div>\n\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\uff0c.\uff08\u53e5\u70b9\uff09\u5b57\u7b26\u79f0\u4e3a\u201c\u901a\u914d\u7b26\u201d\u3002\u5b83\u5339\u914d\u9664\u4e86\u6362\u884c\u4e4b\u5916\u7684\u6240\u6709 \u5b57\u7b26\u3002<\/p>\n
>>> <\/span>atRegex = re.compile(r'.at'<\/span>)\r\n>>> <\/span>atRegex.findall('The cat in the hat sat on the flat mat.'<\/span>)\r\n['cat'<\/span>, 'hat'<\/span>, 'sat'<\/span>, 'lat'<\/span>, 'mat'<\/span>]\r\n<\/code><\/pre>\n\u53e5\u70b9\u5b57\u7b26\u53ea\u5339\u914d\u4e00\u4e2a\u5b57\u7b26\uff0c\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5728\u524d\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u5bf9\u4e8e\u6587\u672cflat\uff0c\u53ea\u5339\u914d lat\u3002<\/p>\n
\u7528\u70b9-\u661f\u5339\u914d\u6240\u6709\u5b57\u7b26<\/strong><\/strong><\/span><\/div>\n\u6709\u65f6\u5019\u60f3\u8981\u5339\u914d\u6240\u6709\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0c\u5047\u5b9a\u60f3\u8981\u5339\u914d\u5b57\u7b26\u4e32'First Name:'\uff0c\u63a5\u4e0b\u6765\u662f\u4efb\u610f\u6587\u672c\uff0c\u63a5\u4e0b\u6765\u662f'Last Name:'\uff0c\u7136\u540e\u53c8\u662f\u4efb\u610f\u6587\u672c\u3002\u53ef\u4ee5\u7528\u70b9-\u661f\uff08.*\uff09\u8868\u793a\u201c\u4efb\u610f\u6587\u672c\u201d\u3002\u56de\u5fc6\u4e00\u4e0b\uff0c\u53e5\u70b9\u5b57\u7b26\u8868\u793a\u201c\u9664\u6362\u884c\u5916\u6240\u6709\u5355\u4e2a\u5b57\u7b26\u201d\uff0c\u661f\u53f7\u5b57\u7b26\u8868\u793a\u201c\u524d\u9762\u5b57\u7b26\u51fa\u73b0\u96f6\u6b21\u6216\u591a\u6b21\u201d\u3002<\/p>\n
>>> <\/span>nameRegex = re.compile(r'First Name: (.*) Last Name: (.*)'<\/span>)\r\n>>> <\/span>mo = nameRegex.search('First Name: Al Last Name: Sweigart'<\/span>)\r\n>>> <\/span>mo.group(1<\/span>)\r\n'Al'<\/span>\r\n>>> <\/span>mo.group(2<\/span>)\r\n'Sweigart'<\/span>\r\n<\/code><\/pre>\n\u7528\u53e5\u70b9\u5b57\u7b26\u5339\u914d\u6362\u884c<\/strong><\/strong><\/span><\/div>\n\u70b9-\u661f\u5c06\u5339\u914d\u9664\u6362\u884c\u5916\u7684\u6240\u6709\u5b57\u7b26\u3002\u901a\u8fc7\u4f20\u5165 re.DOTALL \u4f5c\u4e3a re.compile()\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u53ef\u4ee5\u8ba9\u53e5\u70b9\u5b57\u7b26\u5339\u914d\u6240\u6709\u5b57\u7b26\uff0c\u5305\u62ec\u6362\u884c\u5b57\u7b26\u3002<\/p>\n
>>> noNewlineRegex = re.compile('.*')<\/span>\r\n>>> noNewlineRegex.search('Serve the public trust.\\nProtect the innocent.<\/span>\r\n\\nUphold the law.').group()<\/span>\r\n'Serve the public trust.'<\/span>\r\n>>> newlineRegex = re.compile('.*', re.DOTALL)<\/span>\r\n>>> newlineRegex.search('Serve the public trust.\\nProtect the innocent.<\/span>\r\n\\nUphold the law.').group()<\/span>\r\n'Serve the public trust.\\nProtect the innocent.\\nUphold the law.'<\/span>\r\n<\/code><\/pre>\n\u6b63\u5219\u8868\u8fbe\u5f0f\u7b26\u53f7\u590d\u4e60<\/strong><\/strong><\/span><\/div>\n\n- ?\u5339\u914d\u96f6\u6b21\u6216\u4e00\u6b21\u524d\u9762\u7684\u5206\u7ec4\u3002<\/li>\n
- *\u5339\u914d\u96f6\u6b21\u6216\u591a\u6b21\u524d\u9762\u7684\u5206\u7ec4\u3002<\/li>\n
- +\u5339\u914d\u4e00\u6b21\u6216\u591a\u6b21\u524d\u9762\u7684\u5206\u7ec4\u3002<\/li>\n
- {n}\u5339\u914d n \u6b21\u524d\u9762\u7684\u5206\u7ec4\u3002<\/li>\n
- {n,}\u5339\u914d n \u6b21\u6216\u66f4\u591a\u524d\u9762\u7684\u5206\u7ec4\u3002<\/li>\n
- {,m}\u5339\u914d\u96f6\u6b21\u5230 m \u6b21\u524d\u9762\u7684\u5206\u7ec4\u3002<\/li>\n
- {n,m}\u5339\u914d\u81f3\u5c11 n \u6b21\u3001\u81f3\u591a m \u6b21\u524d\u9762\u7684\u5206\u7ec4\u3002<\/li>\n
- {n,m}?\u6216*?\u6216+?\u5bf9\u524d\u9762\u7684\u5206\u7ec4\u8fdb\u884c\u975e\u8d2a\u5fc3\u5339\u914d\u3002<\/li>\n
- ^spam \u610f\u5473\u7740\u5b57\u7b26\u4e32\u5fc5\u987b\u4ee5 spam \u5f00\u59cb\u3002<\/li>\n
- spam$\u610f\u5473\u7740\u5b57\u7b26\u4e32\u5fc5\u987b\u4ee5 spam \u7ed3\u675f\u3002<\/li>\n
- .\u5339\u914d\u6240\u6709\u5b57\u7b26\uff0c\u6362\u884c\u7b26\u9664\u5916\u3002<\/li>\n
- \\d\u3001\\w \u548c\\s \u5206\u522b\u5339\u914d\u6570\u5b57\u3001\u5355\u8bcd\u548c\u7a7a\u683c\u3002<\/li>\n
- \\D\u3001\\W \u548c\\S \u5206\u522b\u5339\u914d\u51fa\u6570\u5b57\u3001\u5355\u8bcd\u548c\u7a7a\u683c\u5916\u7684\u6240\u6709\u5b57\u7b26\u3002<\/li>\n
- [abc]\u5339\u914d\u65b9\u62ec\u53f7\u5185\u7684\u4efb\u610f\u5b57\u7b26\uff08\u8bf8\u5982 a\u3001b \u6216 c\uff09\u3002<\/li>\n
- [^abc]\u5339\u914d\u4e0d\u5728\u65b9\u62ec\u53f7\u5185\u7684\u4efb\u610f\u5b57\u7b26\u3002<\/li>\n<\/ul>\n\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u7684\u5339<\/strong><\/span><\/div>\n
\u5411re.comlile()\u4f20\u5165re.IGNORECASE\u6216re.I\uff0c\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570<\/p>\n
\u7528sub()\u65b9\u6cd5\u66ff\u6362\u5b57\u7b26\u4e32<\/strong><\/strong><\/span><\/div>\nRegex\u5bf9\u8c61\u7684sub()\u65b9\u6cd5\u9700\u8981\u4f20\u5165\u4e24\u4e2a\u53c2\u6570\u3002\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u5b57\u7b26\u4e32\uff0c\u7528\u4e8e\u53d6\u4ee3\u53d1\u73b0\u7684\u5339\u914d\u3002\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5373\u6b63\u5219\u8868\u8fbe\u5f0f\u3002sub()\u65b9\u6cd5\u8fd4\u56de\u66ff\u6362\u5b8c\u6210\u540e\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n
>>> <\/span>namesRegex = re.compile(r'Agent \\w+'<\/span>)\r\n>>> <\/span>namesRegex.sub('CENSORED'<\/span>, 'Agent Alice gave the secret documents to Agent Bob.'<\/span>)\r\n'CENSORED gave the secret documents to CENSORED.'<\/span>\r\n<\/code><\/pre>\n\u6709\u65f6\u5019\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u5339\u914d\u7684\u6587\u672c\u672c\u8eab\uff0c\u4f5c\u4e3a\u66ff\u6362\u7684\u4e00\u90e8\u5206\u3002\u5728 sub()\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u4e2d\uff0c\u53ef\u4ee5\u8f93\u5165\\1\u3001\\2\u3001\\3\u2026\u2026\u3002\u8868\u793a\u201c\u5728\u66ff\u6362\u4e2d\u8f93\u5165\u5206\u7ec41\u30012\u30013\u2026\u2026\u7684\u6587\u672c\u201d\u3002<\/p>\n
\u4f8b\u5982\uff0c\u5047\u5b9a\u60f3\u8981\u9690\u53bb\u5bc6\u63a2\u7684\u59d3\u540d\uff0c\u53ea\u663e\u793a\u4ed6\u4eec\u59d3\u540d\u7684\u7b2c\u4e00\u4e2a\u5b57\u6bcd\u3002\u8981\u505a\u5230\u8fd9\u4e00\u70b9\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f Agent (\\w)\\w*\uff0c\u4f20\u5165 r'\\1****'\u4f5c sub()\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u3002\u5b57\u7b26\u4e32\u4e2d\u7684\\1 \u5c06\u7531\u5206\u7ec4 1\u5339\u914d\u7684\u6587\u672c\u6240\u66ff\u4ee3\uff0c\u4e5f\u5c31\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u7684(\\w)\u5206\u7ec4\u3002<\/p>\n
>><\/span>> agentNamesRegex = re.compile(r'Agent (\\w)\\w*'<\/span>)\r\n>><\/span>> agentNamesRegex.sub(r'\\1****'<\/span>, 'Agent Alice told Agent Carol that Agent\r\nEve knew Agent Bob was a double agent.'<\/span>)\r\nA**** told C**** that E**** knew B**** was a double agent.'\r\n<\/span><\/code><\/pre>\n\u5982\u679c\u8981\u5339\u914d\u7684\u6587\u672c\u6a21\u5f0f\u5f88\u7b80\u5355\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u5c31\u5f88\u597d\u3002\u4f46\u5339\u914d\u590d\u6742\u7684\u6587\u672c\u6a21\u5f0f\uff0c\u53ef\u80fd\u9700\u8981\u957f\u7684\u3001\u8d39\u89e3\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u3002\u4f60\u53ef\u4ee5\u544a\u8bc9re.compile()\uff0c\u5ffd\u7565\u6b63\u5219\u8868\u8fbe\u5f0f\u5b57\u7b26\u4e32\u4e2d\u7684\u7a7a\u767d\u7b26\u548c\u6ce8\u91ca\uff0c\u4ece\u800c\u7f13\u89e3\u8fd9\u4e00\u70b9\u3002\u8981\u5b9e\u73b0\u8fd9\u79cd\u8be6\u7ec6\u6a21\u5f0f\uff0c\u53ef\u4ee5\u5411 re.compile() \u4f20\u5165\u53d8\u91cf re.VERBOSE\uff0c\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\u3002<\/p>\n
\u9879\u76ee \u7535\u8bdd\u53f7\u7801\u548c E-mail \u5730\u5740\u63d0\u53d6\u7a0b\u5e8f<\/strong> \u5047\u8bbe\u4f60\u6709\u4e00\u4e2a\u65e0\u804a\u7684\u4efb\u52a1\uff0c\u8981\u5728\u4e00\u7bc7\u957f\u7684\u7f51\u9875\u6216\u6587\u7ae0\u4e2d\uff0c\u627e\u51fa\u6240\u6709\u7535\u8bdd\u53f7\u7801\u548c\u90ae\u4ef6\u5730\u5740\u3002\u5982\u679c\u624b\u52a8\u7ffb\u9875\uff0c\u53ef\u80fd\u9700\u8981\u67e5\u627e\u5f88\u957f\u65f6\u95f4\u3002\u5982\u679c\u6709\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u5728\u526a\u8d34\u677f\u7684\u6587\u672c\u4e2d\u67e5\u627e\u7535\u8bdd\u53f7\u7801\u548c E-mail\u5730\u5740\uff0c\u90a3\u4f60\u5c31\u53ea\u8981\u6309\u4e00\u4e0bCtrl-A\u9009\u62e9\u6240\u6709\u6587\u672c\uff0c\u6309\u4e0b Ctrl-C \u5c06\u5b83\u590d\u5236\u5230\u526a\u8d34\u677f\uff0c\u7136\u540e\u8fd0\u884c\u4f60\u7684\u7a0b\u5e8f\u3002\u5b83\u4f1a\u7528\u627e\u5230\u7684\u7535\u8bdd\u53f7\u7801\u548c E-mail\u5730\u5740\uff0c\u66ff\u6362\u6389\u526a\u8d34\u677f\u4e2d\u7684\u6587\u672c\u3002<\/p>\nimport<\/span> re\r\nimport<\/span> pyperclip\r\n\r\nphoneRegex = re.compile(r'''(\r\n(\\d{3}|\\(\\d{3}\\))?\r\n(\\s\\|-|\\.)?\r\n(\\d{3})\r\n(\\s|-|\\.)\r\n(\\d{4})\r\n(\\\\s*(ext|x|ext.)\\s*(\\d{2,5}))?\r\n)'''<\/span>, re.VERBOSE)\r\n\r\nemailRegex = re.compile(r'''\r\n([a-zA-Z0-9._%+-]+\r\n@\r\n[a-zA-Z0-9.-]+\r\n(\\.[a-zA-Z]{2,4})\r\n)'''<\/span>, re.VERBOSE)\r\n\r\ntext = str(pyperclip.paste())\r\nmatches = []\r\nfor<\/span> groups