how to use @ in python.. and the @property and the @classmethods
- by zjm1126
this is my code:
def a():
print 'sss'
@a()
def b():
print 'aaa'
b()
and the Traceback is:
sss
Traceback (most recent call last):
File "D:\zjm_code\a.py", line 8, in <module>
@a()
TypeError: 'NoneType' object is not callable
so how to use the '@'
thanks
updated
class a:
@property
def b(x):
print 'sss'
aa=a()
print aa.b
it print :
sss
None
how to use @property
thanks
updated2
and the classmethods:
class a:
@classmethods
def b(x):
print 'sss'
aa=a()
print aa.b
the Traceback is :
Traceback (most recent call last):
File "D:\zjm_code\a.py", line 5, in <module>
class a:
File "D:\zjm_code\a.py", line 6, in a
@classmethods
NameError: name 'classmethods' is not defined
