在所有子目录中查找具有特定扩展名的文件数

import os

def find_files_with_extension(extension, path):
    file_count = 0
    for root, dirs, files in os.walk(path):
        for file in files:
            if file.endswith(extension):
                file_count += 1
    return file_count

path = "/path/to/directory"
extension = ".txt"
file_count = find_files_with_extension(extension, path)

print(f"在 {path} 目录中，具有 {extension} 扩展名的文件数为：{file_count}")