python中的时间转换,秒级时间戳转string，string转时间

旧城等待， 2021-07-27 02:35 797阅读 0赞

import time
    import datetime
    
    
    def paserTime(timestamp):
        t = time.time()
        f=time.localtime(timestamp/1000)
        print (t)                       #原始时间数据
        # print (int(t))                  #秒级时间戳
        print (int(round(t * 1000)))    #毫秒级时间戳
    
        #nowTime = lambda: int(round(t * 1000))
      #  print(nowTime());  # 毫秒级时间戳，基于lambda
        nowTime = lambda:timestamp
        str=time.strftime('%Y-%m-%d %H:%M:%S',f)
        print(str)  # 日期格式化
    
        return str
    # paserTime(time.time())
    def now():
        nowTime = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')  # 现在
        print(nowTime)
    def nowTime():
        t = time.time()
        f = time.localtime(int(t))
        # print(t)
        str = time.strftime('%Y-%m-%d %H:%M:%S', f)
        print(str)  # 日期格式化
        return str
    # nowTime()
    def long2Str(longTime):
        f = time.localtime(int(longTime))
        # print(t)
        str = time.strftime('%Y-%m-%d %H:%M:%S', f)
        print(str)  # 日期格式化
        return str
    def str2time(str):
        date_time = datetime.datetime.strptime(str, '%Y-%m-%d %H:%M:%S')
        # print(date_time)
        return date_time
    
    def str2timestamp(str):
        timstamp=time.mktime(time.strptime(str, '%Y-%m-%d %H:%M:%S'))
        # print(timstamp)
        return timstamp
        # time.mktime()   与    time.localtime() 互为还原函数。
        # time.mktime(timetuple) ：将时间元组转换成时间戳
        # time.localtime([timestamp])：将时间戳转会为时间元组
    # print(str2timestamp(str2)-str2timestamp(str))