Finding File Paths with Regular Expression in Directory

This function is used to find all file paths that match a regular expression in a specified root directory.

Technology Stack : os, re

Code Type : Function

Code Difficulty : Intermediate

                
                    
import os
import re

def find_files(root_dir, pattern='.*'):
    """
    查找匹配正则表达式的文件路径。

    :param root_dir: 根目录路径
    :param pattern: 正则表达式模式
    :return: 匹配的文件路径列表
    """
    matches = []
    for root, dirs, files in os.walk(root_dir):
        for file in files:
            if re.match(pattern, file):
                matches.append(os.path.join(root, file))
    return matches