您可以通过（隐式）使用
datetime.timedelta计算“格雷戈里”时间戳来实现，该时间戳对于从1582年10月15日到现在的日期（或您想使用的其他“时代”）有效。
正如函数的文档字符串所指示的那样，默认情况下，日期字符串将使用
'%Y-%m-%d'
strptime-like格式字符串参数进行解析，但可以覆盖该参数。
from datetime import datetimeGREGORIAN_EPOCH = datetime.strptime('1582-10-15', '%Y-%m-%d')def gregorian_timestamp(date, format='%Y-%m-%d'): """ Calculate timestamp using start of Gregorian calender as epoch. The date parameter can be either a string or a datetime.datetime object. Strings will be parsed using the '%Y-%m-%d' format by default unless a different one is specfied via the optional format parameter. """ try: date = datetime.strptime(date, format) except TypeError: pass return (date - GREGORIAN_EPOCH).total_seconds() # The timedelta in seconds.if __name__ == '__main__': current_date = datetime.now() timestamp = gregorian_timestamp(current_date) print('gregorian timestamp:', timestamp) # -> gregorian timestamp: 13768250461.136208 timestamp = gregorian_timestamp('1970-01-01') print('gregorian timestamp:', timestamp) # -> gregorian timestamp: 12219292800.0 timestamp = gregorian_timestamp('1955-02-28') print('gregorian timestamp:', timestamp) # -> gregorian timestamp: 11750918400.0 timestamp = gregorian_timestamp('1582-10-15') print('gregorian timestamp:', timestamp) # -> gregorian timestamp: 0.0
