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How to traverse a folder in python

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Release: 2019-08-02 13:22:55
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How to traverse a folder in python

方法一 : 利用函数 os.walk()

os.walk() 会返回三元元组 (dirpath, dirnames, filenames)

dirpath : 根路径 (字符串)

dirnames : 路径下的所有目录名 (列表)

filenames : 路径下的所有非目录文件名 (列表) 

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其中目录名和文件名都是没有加上根路径的,所以需要完整路径时需要将目录名或文件名与根路径连接起来。

示例 :

import os 
root = "C:\\dir" 
for dirpath, dirnames, filenames in os.walk(root): 
    for filepath in filenames:
        print os.path.join(dirpath, filepath)
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方法二 : 利用函数 os.listdir(), os.path.isdir(), os.path.isfile()

os.listdir() 可以列出路径下所有文件和目录名,但是不包括当前目录., 上级目录.. 以及子目录下的文件.

os.path.isfile() 和 os.path.isdir() 判断当前路径是否为文件或目录

示例 :

import os 
def listDir(rootDir):
    for filename in os.listdir(rootDir):
        pathname = os.path.join(rootDir, filename)
        if (os.path.isfile(filename)):
            print pathname
        else:
            listDir(pathname)
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