Finding .txt Files in a Directory and Subdirectories

This function is used to find all files that match a given pattern in a specified directory and its subdirectories. Here, the pattern is text files (files ending with .txt).

Technology Stack : os, re

Code Type : Function

Code Difficulty : Intermediate

                
                    
import os
import json
import sys
import re

def find_files_in_directory(directory_path):
    """Find all files in a directory that match a given pattern.

    Args:
        directory_path (str): The path to the directory to search in.

    Returns:
        list: A list of file paths that match the pattern.
    """
    matches = []
    for root, dirs, files in os.walk(directory_path):
        for file in files:
            if re.match(r'.*\.txt$', file):
                matches.append(os.path.join(root, file))
    return matches