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python 遍历目录获取所有文件

 1 year ago
source link: https://xujinzh.github.io/2022/05/27/python-traverse-dir/
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python 遍历目录获取所有文件

2022-05-27technology ， python

4 679 1 分钟

利用 Python 进行文件夹遍历有很多种方法，本篇介绍常用的两种方法，这些方法是内建模块中的方法，速度较快。

os.walk 和 os.scandir

两种方法都是在 os 库实现的，分别是 os.walk，os.scandir，其中后者效率更高些。

import os
def walk(dirs):
    files_all = []
    for root, d, files in os.walk(dirs):
        for file in files:
            file_path = os.path.join(root, file)
            files_all.append(file_path)
    return files_all
def scan(dirs):
    files_all = []
    for item in os.scandir(dirs):
        if item.is_file():
            files_all.append(item.path)
        if item.is_dir():  # 对于目录，递归检索文件
            files_all += scan(dirs=item.path)
    return files_all
path = "data"
set(walk(path)) == set(scan(path))
True
%%timeit -n 1000
walk(path)
281 µs ± 67 µs per loop (mean ± std. dev. of 7 runs, 1,000 loops each)
%%timeit -n 1000
scan(path)
165 µs ± 2.72 µs per loop (mean ± std. dev. of 7 runs, 1,000 loops each)
感谢支持！

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