Python字符串搜索并返回子字符串位置

于 2012-07-23 14:21:00 发布 · 285 阅读

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本文详细介绍了如何在Python中使用find()函数进行字符串搜索，并通过示例代码展示了搜索多个子字符串的过程。

# multiple searches of a string for a substring 
 
 # using s.find(sub[ ,start[, end]]) 

  text = 'MSKSASPKEPEQLRKLFIGGLSFETTDESLRSAHFESSSYGSAGRRF' 

  search = 'SA' 

  start = 0 

  while  True:  

  index = text.find(search, start)  

  # if search string not found, find() returns -1  

  # search is complete, break out of the while loop  

  if index == -1:  

  break 

  print( "%s found at index %d"  % (search, index) )  

  # move to next possible start position  

  start = index  + 1 

//结果：
 SA found at index 3
 SA found at index 31
 SA found at index 41
转自：http://www.pulog.org/code/460/python-str-search/