时间戳与时间互转

参考 https://blog.csdn.net/xxm524/article/details/48055275

# 1. 字符串日期时间转换成时间戳
# '2015-08-28 16:43:37.283' --> 1440751417.283
# 或者 '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






#import pytz
#from datetime import datetime
#print(datetime.fromtimestamp(0, pytz.timezone('Asia/Shanghai')))

# 2. 时间戳转换成字符串日期时间
# 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 ''