python --格式化时间转时间戳(互转)_python 格式化时间戳

import time
import datetime

class TimesType(object):
    '''时间格式互转'''

    def __new__(cls, *args, **kwargs):
        '''单例模式'''
        if not hasattr(cls, '_instance'):
            orig = super(TimesType, cls)
            cls._instance = orig.__new__(cls)
        return cls._instance

    @staticmethod
    def from_strtime_inttime(t: str) -> int:
        '''转为时间戳'''
        return int(time.mktime(time.strptime(t, "%Y-%m-%d %H:%M:%S")))

    @staticmethod
    def from_inttime_strtime(t: int) -> str:
        '''转格式化时间'''
        # return time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(t))  # time
        return datetime.datetime.fromtimestamp(t).strftime("%Y-%m-%d %H:%M:%S")  # datetime

    @staticmethod
    def from_strtime_format_strtime(t: str) -> str:
        '''转显示格式'''
        return time.strftime("%Y/%m/%d %H:%M:%S", time.strptime(t, "%Y-%m-%d %H:%M:%S"))

	@staticmethod
    def from_strtime_format_datetime(t: str) -> datetime:
        '''字符串时间格式转datetime格式'''
        return time.strptime(t, "%Y-%m-%d %H:%M:%S")


    def __str__(self) -> str:
        return '时间格式互转'
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datetime将datetime对象转换成时间字符串和时间戳

# datetime对象转换成时间字符串
datetime_str = datetime.strftime(datetime.now(), '%Y-%m-%d %H:%M:%S')
print(datetime_str)
 
# datetime对象转换成时间戳
datetime_stamp = datetime.timestamp(datetime.now())
print(datetime_stamp)
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结果

2019-05-29 17:22:37
1559121757.343784
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datetime将时间字符串转换成时间戳

# 时间字符串转datetime对象，再转时间戳
datetime_stamp2 = datetime.timestamp(datetime.strptime(datetime_str, '%Y-%m-%d %H:%M:%S'))
print(datetime_stamp2)

输出:
1559121757.0
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datetime将时间戳转换成时间字符串

# 时间戳转datetime对象，再转时间字符串
datetime_str2 = datetime.strftime(datetime.fromtimestamp(datetime_stamp2), '%Y-%m-%d %H:%M:%S')
print(datetime_str2)

输出:
2019-05-29 17:22:37
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