如何将当前日期时间传递给python中的字符串? [英] How can pass the current datetime to string in python?

问题描述

我正在尝试将活动的当前日期和时间传递给字符串值，以便每当我在程序中保存图片或任何内容时，都可以使用其自己的特定名称+ 当前时间进行保存.在一起，但是我可能由于:而遇到错误！以下格式可以满足我的期望:

I'm trying to pass the current date and time of activities to string value so that whenever I saved my picture or anything during the program it can be saved by its own certain name + current time together but I faced error probably due to : ! Following format would fulfill my expectation :

2019-05-22 21-33-34 instead of 2019-05-22 21:33:34.433134 

import datetime as dt
import matplotlib.pyplot as plt

dtime = dt.time()
now=dt.datetime.now()
now.isoformat()
print(now)

...

plt.savefig(f'{now}.png')

...

test_RNN.to_csv(f'test_RNN_history{now}.csv', sep=',', header=None, index=None)

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