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python中关于前后缀操作的详解

返回后缀名
import os

path = 'first_directory/second_directory/file.txt'print os.path.splitext(path)[1]print type(os.path.splitext(path)[1]) 
.txt
<type 'str'> 

前缀名的bool判断
path = 'first_directory/second_directory/file.txt'print path.startswith('fir') 
True 

后缀名的bool判断
path = 'first_directory/second_directory/file.txt'print path.endswith('.txt') 
True 

os.path.splitext、.startswith、.startswith 探究
import os

path = 'first_directory/second_directory/file.txt'print os.path.splitext(path)print os.path.splitext(path)[1]print type(os.path.splitext(path)[1])printprint path.startswith('fir')print path.startswith('aaa')print type(path.startswith('fir'))printprint path.endswith('.txt')print path.endswith('.aaa')print type(path.endswith('.txt')) 
('first_directory/second_directory/file', '.txt')
.txt
<type 'str'>

True
False
<type 'bool'>

True
False
<type 'bool'> 

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