创建一个文件，写入当前日期

import datetime
now = datetime.datetime.now()
with open('c.txt','w') as f
    f.write(str(now))

1 with open('c.txt','r') as f:
2     text_4=f.read(4)
3     print(text_4)

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原文地址：https://www.cnblogs.com/qsmyjz/p/11995418.html