python datetime 字符串 时间戳

#把datetime转成字符串
def datetime_toString(dt):
    return dt.strftime("%Y-%m-%d-%H")

#把字符串转成datetime
def string_toDatetime(string):
    return datetime.strptime(string, "%Y-%m-%d-%H")

#把字符串转成时间戳形式
def string_toTimestamp(strTime):
    return time.mktime(string_toDatetime(strTime).timetuple())

#把时间戳转成字符串形式
def timestamp_toString(stamp):
    return time.strftime("%Y-%m-%d-%H", tiem.localtime(stamp))

#把datetime类型转外时间戳形式
def datetime_toTimestamp(dateTime):
    return time.mktime(dateTime.timetuple())

#把时间戳转成datetime类型
import datetime,time

t=int(time.time())

b=datetime.datetime.fromtimestamp(t)

print(type(t),type(b))#<class 'int'> <class 'datetime.datetime'>