List Files in Directory and Subdirectories

This function takes a directory path as an argument and returns a list of all files in the directory and its subdirectories.

Technology Stack : os, re

Code Type : Function

Code Difficulty : Intermediate

                
                    
import os
import re

def list_files_in_directory(directory_path):
    """
    列出指定目录下的所有文件。
    """
    if not os.path.isdir(directory_path):
        return "Directory does not exist."

    file_list = []
    for root, dirs, files in os.walk(directory_path):
        for file in files:
            file_list.append(os.path.join(root, file))

    return file_list