The relationship between @classmethod @staticmethod @property in Python2.7 learning

First come to an instance scene, then test, compare, do not understand the words to find information online:
#!/usr/bin/env python

#!/usr/bin/env python

Class Date (object):
def __init__ (self,year=0,month=0,day=0):
Self.year = Year
Self.month = Month
Self.day = Day

     @staticmethod
     def statictime (self):
          return ' {year}-{month}-{day} '. Format (
              year = self.year,
              month = self.month,
              day = self.day
        )

    @property
     def time (self):
          return ' {year}-{month}-{day} '. Format (
              year = self.year,
              month = Self.month,
             day = Self.day
        )
     @classmethod
     def from_string (cls,string):
         Year, Month,day = Map (Str,string.split ('-'))
         date = CLS (Year,month, Day)
         return date

def Showtime (self):
Return "{m}/{d}/{y}". Format (
Y = Self.year,
M = Self.month,
D = Self.day
)
print '-' *20
Date = Date ("2016", "11", "09")
print ' Date @property ', Date.time
print ' Date @normal ', Date.showtime ()
print ' Date @staticmethod ', Date.statictime (date)

print '-' *20
date_string = ' 2017-05-27 '
Year,month,day = Map (Str,date_string.split ('-'))
Date2 = Date (year,month,day)
print ' Date2 @property ', date2.time
print ' Date2 @noraml ', Date2.showtime ()
print ' Date2 @staticmethod ', Date2.statictime (date2)

print '-' *20
Date3 = date.from_string (date_string)
print ' Date3 @property ', date3.time
print ' Date3 @normal ', Date3.showtime ()
print ' Date3 @staticmethod ', Date3.statictime (Date3)

Operation Result:
--------------------
Date @property 2016-11-09
Date @normal 11/09/2016
Date @staticmethod 2016-11-09
--------------------
Date2 @property 2017-05-27
Date2 @noraml 05/27/2017
Date2 @staticmethod 2017-05-27
--------------------
Date3 @property 2017-05-27
Date3 @normal 05/27/2017
Date3 @staticmethod 2017-05-27

Preliminary test results:

1, @property the function behind the adorner, cannot be added () in the instance call, or an error will occur: TypeError: ' str ' object is not callable

2, the normal method, if not add () in the instance call, is not to run the function, but only return the function (method) address:

3, @staticmethod the function behind the adorner, you must add the image parameter in the instance call, otherwise you will be prompted: Typeerror:statictime () takes exactly 1 argument (0 given)

4, @classmethod My preliminary understanding: Is the class, the redefinition of the initialization.

========================================================

Example prototype Link: http://mp.weixin.qq.com/s/6NJAoFI-DbsNQdA3M1SIMw (very recommended for everyone to see)

Continue tomorrow ....

The relationship between @classmethod @staticmethod @property in Python2.7 learning