# -*- coding: UTF-8 -*-

import time

with open('write_file.txt', 'a') as f:
    for i in range(5):
        # 计算时间戳
        timestamp = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime())
        # 构造内容
        contents = f'timestamp:{timestamp}, content:{i}'
        # \n
        # content = f'{contents}\n'
        # \r\n
        content = f'{contents}\r\n'
        # 追加写入
        f.write(content)

# 计算文件行数
file_path = 'write_file.txt'  # 替换成你的文本文件路径

with open(file_path, 'r') as file:
    lines = file.readlines()

num_lines = len(lines)
print("文本文件的行数:", num_lines)

'''
# \n
# content = f'{contents}\n'
文本文件的行数: 5
'''

'''
# \r\n
content = f'{contents}\r\n'
文本文件的行数: 10
''' 

'''
参考：
\r\n和\n的区别 回车/换行 在不同系统下的区别
https://blog.csdn.net/m0_51233386/article/details/134153294
Python 追加写入 txt 文件
https://geek-docs.com/python/python-file-tutorials/189_python_appends_to_a_txt_file.html#google_vignette
Python获取文本文件的行数
https://blog.csdn.net/szial/article/details/131911477
'''