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5.2.3 案例精选

时间:2018-04-08 15:58:23      阅读:162      评论:0      收藏:0      [点我收藏+]

标签:span   2.3   程序   res   查找   color   while   sea   号码   

  例 1 :使用正则表达式提取字符串中的电话号码。

 1 import re
 2 
 3 telNumber = ‘‘‘Suppose my Phone No. is 0535-1234567,yours is 010-12345678,his is 025-87654321.‘‘‘
 4 pattern = re.compile(r(\d{3,4})-(\d{7,8}))
 5 
 6 index = 0
 7 while True:
 8     matchResult = pattern.search(telNumber,index)  #从指定位置开始匹配
 9     if not matchResult:
10         break
11     print(- * 30)
12     print(Success:)
13     for i in range(3):
14         print(Sarched content:,matchResult.group(i),Start from:,matchResult.start(i),End at:,
matchResult.end(i),Its span is:,matchResult.span(i)) 15 index = matchResult.end(2) #指定下次匹配的开始位置 16 17 ‘‘‘ 18 ------------------------------ 19 Success: 20 Sarched content: 0535-1234567 Start from: 24 End at: 36 Its span is: (24, 36) 21 Sarched content: 0535 Start from: 24 End at: 28 Its span is: (24, 28) 22 Sarched content: 1234567 Start from: 29 End at: 36 Its span is: (29, 36) 23 ------------------------------ 24 Success: 25 Sarched content: 010-12345678 Start from: 46 End at: 58 Its span is: (46, 58) 26 Sarched content: 010 Start from: 46 End at: 49 Its span is: (46, 49) 27 Sarched content: 12345678 Start from: 50 End at: 58 Its span is: (50, 58) 28 ------------------------------ 29 Success: 30 Sarched content: 025-87654321 Start from: 66 End at: 78 Its span is: (66, 78) 31 Sarched content: 025 Start from: 66 End at: 69 Its span is: (66, 69) 32 Sarched content: 87654321 Start from: 70 End at: 78 Its span is: (70, 78) 33 ‘‘‘

 

  例 2:使用正则表达式提取Python程序中的类名、函数名已经变量名等标识符。

  将下面的代码保存为FindIdentifiersFromPyFile.py,在名利提示符环境中使用命令“Python FindIdentifiersFromPyFile.py 目标文件名”查找并输出目标文件中的标识符。

 

5.2.3 案例精选

标签:span   2.3   程序   res   查找   color   while   sea   号码   

原文地址:https://www.cnblogs.com/avention/p/8744751.html

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