parameters: (date,d=0,h=0,m=0,s=0)
return_statement: return date+diff
docstring: 给传入的参数加上指定的时间
docstring_summary: 给传入的参数加上指定的时间
docstring_tokens: 给传入的参数加上指定的时间
function: def addtime(date,d=0,h=0,m=0,s=0):
      """给传入的参数加上指定的时间"""
      diff= datetime.timedelta(days=d,hours=h,minutes=m,seconds=s)
      return date+diff
function_tokens: def addtime ( date , d = 0 , h = 0 , m = 0 , s = 0 ) : diff = datetime . timedelta ( days = d , hours = h , minutes = m , seconds = s ) return date + diff