os.walk，无需深入研究以下目录

问题描述：

如何限制os.walk仅返回我提供的目录中的文件?

How do I limit os.walk to only return files in the directory I provide it?

def _dir_list(self, dir_name, whitelist):
    outputList = []
    for root, dirs, files in os.walk(dir_name):
        for f in files:
            if os.path.splitext(f)[1] in whitelist:
                outputList.append(os.path.join(root, f))
            else:
                self._email_to_("ignore")
    return outputList

答

使用walklevel函数.

import os

def walklevel(some_dir, level=1):
    some_dir = some_dir.rstrip(os.path.sep)
    assert os.path.isdir(some_dir)
    num_sep = some_dir.count(os.path.sep)
    for root, dirs, files in os.walk(some_dir):
        yield root, dirs, files
        num_sep_this = root.count(os.path.sep)
        if num_sep + level <= num_sep_this:
            del dirs[:]

它的作用与os.walk相似，但是您可以向其传递一个level参数，该参数指示递归进行的深度.

It works just like os.walk, but you can pass it a level parameter that indicates how deep the recursion will go.

os.walk，无需深入研究以下目录

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