python filecmp.dircmp 忽略通配符

Question

filecmp.dircmp 用于比较两个文件夹。它接受参数ignore，但它只进行精确匹配，而不进行通配符匹配。知道如何忽略模式吗？

Answer 1

您可以使用 glob https://docs.python.org/3/library/glob.html扩展模式并将扩展列表提供给忽略参数。

假设您有左侧文件夹和右侧文件夹，并且您想从比较中过滤掉所有 *.foo 和 *.bar，

import os
import glob
import filecmp

ignore_list = []
patterns_to_ignore = ['*.foo', '*.bar']
for pattern in patterns_to_ignore:
    ignore_left = [os.path.split(expanded)[1] for expanded in glob.glob(os.path.join(left, pattern))]
    ignore_right = [os.path.split(expanded)[1] for expanded in glob.glob(os.path.join(right, pattern))]
    ignore_list.extend(ignore_left)
    ignore_list.extend(ignore_right)


diff = filecmp.dircmp(left, right, ignore=ignore_list)