go语言中，导入time包,很简单。

func main() {
   timestamp := time.Now().Unix()

   fmt.Println(tstime(timestamp))
   fmt.Println(timets(tstime(timestamp)))
}
func tstime(a int64) string {
   tm := time.Unix(a,0)
   return tm.Format("2006-01-02 15:04:05")
}
func timets(a string) int64 {
   t,err := time.Parse("2006-01-02 15:04:05",a)
   if err != nil {
      return 0
   }
   return t.Unix()
}

python中 一样简单。

import time
a = "2017-03-16 13:30:00"
print(time.time())
print(time.localtime(1489641715))
print(time.mktime( time.strptime(a,'%Y-%m-%d %H:%M:%S')))