python 取得13 16位时间戳 及逆向转化

import datetime
import time

def get_float_time_stamp():
  datetime_now = datetime.datetime.now()
  return datetime_now.timestamp()

def get_time_stamp16():
  # 生成16时间戳  eg:1540281250399895  -ln
  datetime_now = datetime.datetime.now()
  print(datetime_now)

  # 10位，时间点相当于从UNIX TIME的纪元时间开始的当年时间编号
  date_stamp = str(int(time.mktime(datetime_now.timetuple())))

  # 6位，微秒
  data_microsecond = str("%06d"%datetime_now.microsecond)

  date_stamp = date_stamp+data_microsecond
  return int(date_stamp)

def get_time_stamp13():
  # 生成13时间戳  eg:1540281250399895
  datetime_now = datetime.datetime.now()

  # 10位，时间点相当于从UNIX TIME的纪元时间开始的当年时间编号
  date_stamp = str(int(time.mktime(datetime_now.timetuple())))

  # 3位，微秒
  data_microsecond = str("%06d"%datetime_now.microsecond)[0:3]

  date_stamp = date_stamp+data_microsecond
  return int(date_stamp)

def stampToTime(stamp):
  datatime = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(float(str(stamp)[0:10])))
  datatime = datatime+'.'+str(stamp)[10:]
  return datatime

if __name__ == '__main__':
  a1 = get_time_stamp16()
  print(a1)
  print(stampToTime(a1))
  a2 = get_time_stamp13()
  print(a2)
  print(stampToTime(a2))