忽略除特定文件类型以外的所有文件，以便在Python中进行目录比较

import os

def compare_directories(dir1, dir2):
    files1 = get_files(dir1)
    files2 = get_files(dir2)

    for file1 in files1:
        if is_allowed_file(file1):
            file2 = find_corresponding_file(file1, files2)
            if file2:
                compare_files(file1, file2)

def get_files(directory):
    files = []
    for root, _, filenames in os.walk(directory):
        for filename in filenames:
            files.append(os.path.join(root, filename))
    return files

def is_allowed_file(file):
    allowed_extensions = ['.txt', '.csv', '.json']  # 允许的文件类型
    _, extension = os.path.splitext(file)
    return extension in allowed_extensions

def find_corresponding_file(file, files):
    _, filename = os.path.split(file)
    for f in files:
        if filename == os.path.split(f)[1]:
            return f
    return None

def compare_files(file1, file2):
    # 在这里进行文件比较的操作
    pass

# 示例用法
dir1 = '/path/to/directory1'
dir2 = '/path/to/directory2'
compare_directories(dir1, dir2)