python 中的os.path.split()函数用法

基本概念

os.path.split()通过一对链表的头和尾来划分路径名。链表的tail是是最后的路径名元素。head则是它前面的元素。

举个例子：

path name = ‘/home/User/Desktop/file.txt’
在上面的这个例子中，路径名字file.txt称之为tail 路径‘/home/User/Desktop/’ 称之为head。tail部分永远不会包含斜杠符号。如果这个路径名字以斜杠结束，那么tail就是为空。
如果没有斜杠在路径中，那么head是为空的。下面是详细的参数：

path                             head                 tail

‘/home/user/Desktop/file.txt’ ‘/home/user/Desktop/’ ‘file.txt’
‘/home/user/Desktop/’ ‘/home/user/Desktop/’ {empty}
‘file.txt’ {empty} ‘file.txt’
实例分析

1 实例一：

Python program to explain os.path.split() method

importing os module

import os

path

path = ‘/home/User/Desktop/file.txt’

Split the path in

head and tail pair

head_tail = os.path.split(path)

print head and tail

of the specified path

print(“Head of ‘% s:’” % path, head_tail[0])
print(“Tail of ‘% s:’” % path, head_tail[1], “\n”)

‘’’
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‘’’

path

path = ‘/home/User/Desktop/’

Split the path in

head and tail pair

head_tail = os.path.split(path)

print head and tail

of the specified path

print(“Head of ‘% s:’” % path, head_tail[0])
print(“Tail of ‘% s:’” % path, head_tail[1], “\n”)

path

path = ‘file.txt’

Split the path in

head and tail pair

head_tail = os.path.split(path)

print head and tail

of the specified path

print(“Head of ‘% s:’” % path, head_tail[0])
print(“Tail of ‘% s:’” % path, head_tail[1])
2 结果：

Head of ‘/home/User/Desktop/file.txt’: /home/User/Desktop
Tail of ‘/home/User/Desktop/file.txt’: file.txt

Head of ‘/home/User/Desktop/’: /home/User/Desktop
Tail of ‘/home/User/Desktop/’:

Head of ‘file.txt’:
Tail of ‘file.txt’: file.txt
3 实例二

Python program to explain os.path.split() method

‘’’
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‘’’

importing os module

import os

path

path = ‘’

Split the path in

head and tail pair

head_tail = os.path.split(path)

print head and tail

of the specified path

print(“Head of ‘% s’:” % path, head_tail[0])
print(“Tail of ‘% s’:” % path, head_tail[1])

os.path.split() function

will return empty

head and tail if

specified path is empty

4 测试结果：

Head of ‘’:
Tail of ‘’: