【python】os.path.join()

转载自： https://blog.csdn.net/hduxiejun/article/details/80289476

 

os.path.join()

函数功能：连接两个或更多的路径名组件

如果各组件名首字母不包含’/’，则函数会自动加上

如果有一个组件是一个绝对路径，则在它之前的所有组件均会被舍弃

如果最后一个组件为空，则生成的路径以一个’/’分隔符结尾

 

Demo1

import os 

Path1 = 'home'
Path2 = 'develop'
Path3 = 'code'

Path10 = Path1 + Path2 + Path3
Path20 = os.path.join(Path1,Path2,Path3)
print 'Path10 = ',Path10
print 'Path20 = ',Path20 

输出:

Path10 = homedevelopcode
Path20 = home/develop/code

 

Demo2

import os 

Path1 = '/home'
Path2 = 'develop'
Path3 = 'code'

Path10 = Path1 + Path2 + Path3
Path20 = os.path.join(Path1,Path2,Path3)
print 'Path10 = ',Path10
print 'Path20 = ',Path20 

输出：

Path10 = /homedevelopcode
Path20 = /home/develop/code

 

Demo3

import os 

Path1 = 'home'
Path2 = '/develop'
Path3 = 'code'

Path10 = Path1 + Path2 + Path3
Path20 = os.path.join(Path1,Path2,Path3)
print 'Path10 = ',Path10
print 'Path20 = ',Path20 

输出如下:

Path10 = home/developcode
Path20 = /develop/code

 

Demo4

import os 

Path1 = 'home'
Path2 = 'develop'
Path3 = '/code'

Path10 = Path1 + Path2 + Path3
Path20 = os.path.join(Path1,Path2,Path3)
print 'Path10 = ',Path10
print 'Path20 = ',Path20 

输出如下:

Path10 = homedevelop./code
Path20 = home/develop/./code