# 写一段统计当下目录下所有py文件代码行数的代码，计算总数，同时给出每个文件的行数，并打印。（“文件相对路径”，“文件行数”）

import os

def count_lines_in_directory(directory):
    total_lines = 0
    for root, dirs, files in os.walk(directory):
        for file in files:
            if file.endswith('.py'):
                file_path = os.path.join(root, file)
                with open(file_path, 'r', encoding='utf-8') as f:
                    lines = f.readlines()
                    total_lines += len(lines)
                    print(f"{file_path}: {len(lines)} lines")
    print(f"Total lines: {total_lines}")

count_lines_in_directory('.')