pythonでよく使われる関数

python timestampとdatetime間の変換

文字列日付時刻をタイムスタンプ

に変換

# '2015-08-28 16:43:37.283' --> 1440751417.283  
#    '2015-08-28 16:43:37' --> 1440751417.0  
def string2timestamp(strValue):  
  
    try:          
        d = datetime.datetime.strptime(strValue, "%Y-%m-%d %H:%M:%S.%f")  
        t = d.timetuple()  
        timeStamp = int(time.mktime(t))  
        timeStamp = float(str(timeStamp) + str("%06d" % d.microsecond))/1000000  
        print timeStamp  
        return timeStamp  
    except ValueError as e:  
        print e  
        d = datetime.datetime.strptime(str2, "%Y-%m-%d %H:%M:%S")  
        t = d.timetuple()  
        timeStamp = int(time.mktime(t))  
        timeStamp = float(str(timeStamp) + str("%06d" % d.microsecond))/1000000  
        print timeStamp  
        return timeStamp  

2.タイムスタンプを文字列に変換した日付

# 1440751417.283 --> '2015-08-28 16:43:37.283'  
def timestamp2string(timeStamp):  
    try:  
        d = datetime.datetime.fromtimestamp(timeStamp)  
        str1 = d.strftime("%Y-%m-%d %H:%M:%S.%f")  
        # 2015-08-28 16:43:37.283000'  
        return str1  
    except Exception as e:  
        print e  
        return ''  

転載先:https://www.cnblogs.com/daihanlong/p/8564163.html