# 时间 减去 多少小时 python
import datetime
# time = datetime.strptime(datetime.now('%Y%m%d %H%M:%S'))

import time
train_start=datetime.datetime(year=2020, month=4, day=22, hour=12, minute=14, second=0, microsecond=0)
delta_time_to_train_station=datetime.timedelta(hours = 1, minutes = 40) 
print(train_start-delta_time_to_train_station)
# 2020-04-22 10:34:00