Python之File System

最新推荐文章于 2024-09-10 09:07:33 发布

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最新推荐文章于 2024-09-10 09:07:33 发布

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文章标签： python

原文链接：http://www.cnblogs.com/allenblogs/archive/2011/04/28/2031841.html

本文详细介绍了Python中用于文件系统操作的os、os.path和shutil模块的基本用法，包括如何列出目录中的文件名、拼接路径、获取绝对路径、判断路径是否存在、创建目录等常用功能，并通过示例代码演示了这些功能的应用。

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File System -- os, os.path, shutil

The *os* and *os.path* modules include many functions to interact with the file system. The *shutil* module can copy files.

os module docs
filenames = os.listdir(dir) -- list of filenames in that directory path (not including . and ..). The filenames are just the names in the directory, not their absolute paths.
os.path.join(dir, filename) -- given a filename from the above list, use this to put the dir and filename together to make a path
os.path.abspath(path) -- given a path, return an absolute form, e.g. /home/nick/foo/bar.html
os.path.dirname(path), os.path.basename(path) -- given dir/foo/bar.html, return the dirname "dir/foo" and basename "bar.html"
os.path.exists(path) -- true if it exists
os.mkdir(dir_path) -- makes one dir, os.makedirs(dir_path) makes all the needed dirs in this path
shutil.copy(source-path, dest-path) -- copy a file (dest path directories should exist)

# # Example pulls filenames from a dir, prints their relative and absolute paths
def printdir(dir):
filenames = os.listdir(dir)
for filename in filenames:
print filename # # foo.txt
print os.path.join(dir, filename) # # dir/foo.txt (relative to current dir)
print os.path.abspath(os.path.join(dir, filename) # # /home/nick/dir/foo.txt

转载于:https://www.cnblogs.com/allenblogs/archive/2011/04/28/2031841.html