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O'Reilly Platform
book
Python语言及其应用(第2版)
by
Bill Lubanovic
March 2022
Intermediate to advanced
522 pages
13h 52m
Chinese
Posts & Telecom Press
Content preview from
Python语言及其应用(第2版)
232
|
第
14
章
14.3.7
使用
chown()
改变文件所属权
chown()
也是
Unix/Linux/Mac
系统特有的。可以通过指定数字形式的用户
ID
(
uid
)和组
ID
(
gid
)来改变文件的属主和
/
或属组。
>>> uid = 5
>>> gid = 22
>>> os.chown('oops', uid, gid)
14.3.8
使用
remove()
删除文件
在下面的代码片段中,使用
remove()
函数删除文件
oops.txt
。
>>> os.remove('oops.txt')
>>> os.path.exists('oops.txt')
False
14.4
目录操作
在大多数操作系统中,文件存放在
目录
(通常称为
文件夹
)层次结构内。包含所有这些文
件和目录的容器就是
文件系统
(有时候称为
卷
)。标准模块
os
可以处理具体的操作,以下
是一些可用的函数。
14.4.1
使用
mkdir()
创建目录
下面的例子展示了如何创建目录
poems
。
>>> os.mkdir('poems')
>>> os.path.exists('poems')
True
14.4.2
使用
rmdir()
删除目录
经过再三考虑,
2
你觉得用不着这个目录,决定将其删除。
>>> os.rmdir('poems')
>>> os.path.exists('poems')
False
14.4.3
使用
listdir()
列出目录内容
好吧,你又后悔了。下面重新创建
poems
,向其中加入一些内容:
>>> os.mkdir('poems')
现在列出目录内容(目前还是空的) ...
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Publisher Resources
ISBN: 9787115586223