python 中datetime、timestamp、字符串str互转及日期差计算

叁歲伎倆 2022-04-23 09:38 783阅读 0赞

## python 中datetime、timestamp、字符串str互转及日期差计算 ##

1.  把字符串转成datetime

# encoding: utf-8
    ''' @author: weiyang_tang @contact: weiyang_tang@126.com @file: datetime_timeStamp_str.py @time: 2019-02-06 11:44 @desc: 时间日期、时间戳、字符串互转、日期差 '''
    
    import time
    import datetime
    #获取当前日期
    now_dateTime=datetime.datetime.now() #获取当前日期 格式：2019-02-06 11:47:36.406318
    print("获取当前日期:",now_dateTime)
    
    #将datetime类型转成str类型
    #strftime("%Y-%m-%d %H:%M:%S") datetime->str
    now_str=now_dateTime.strftime("%Y-%m-%d %H:%M:%S")
    print("将datetime类型->str类型",now_str)
    
    #str->dateTime 字符串转成日期datetime
    #strptime(str,format)
    oneDay_str="2019-2-6 12:1:0"
    oneDay_datetime=datetime.datetime.strptime(oneDay_str,"%Y-%m-%d %H:%M:%S")
    print("字符串转成日期datetime",oneDay_datetime)
    
    
    
    # 获取当前时间时间戳
    now_timestamp=time.time()
    print("获取当前时间的时间戳",now_timestamp)
    
    #字符串转成时间戳str->timestamp
    oneDay_str="2019-2-6 12:1:0"
    oneDay_timestamp=time.mktime(time.strptime(oneDay_str,"%Y-%m-%d %H:%M:%S"))
    print("字符串转时间戳:",oneDay_timestamp)
    
    #时间戳转成日期 timestamp->datetime
    #now_dateTime=datetime.datetime.strptime()
    now_dateTime=datetime.datetime.fromtimestamp(now_timestamp)
    print("时间戳转成日期:",now_dateTime)
    
    
    #两个日期差
    oneDay_str="2019-2-6 20:30:0"
    now_timestamp=time.time()
    oneDay_timestamp=time.mktime(time.strptime(oneDay_str,"%Y-%m-%d %H:%M:%S"))
    difTime=now_timestamp-oneDay_timestamp
    print("时间间隔为:",difTime,"秒")