Finding File Paths with Regular Expression Pattern

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

Technology Stack : os, re

Code Type : Function

Code Difficulty : Intermediate

                
                    
import os
import re

def find_files(root_dir, pattern):
    """
    查找匹配指定模式的文件路径。
    
    :param root_dir: 根目录路径
    :param pattern: 文件名模式，使用正则表达式
    :return: 匹配的文件路径列表
    """
    matches = []
    for dirpath, dirnames, filenames in os.walk(root_dir):
        for filename in filenames:
            if re.match(pattern, filename):
                matches.append(os.path.join(dirpath, filename))
    return matches