Amazing Python 3: "@"

1. This an interesting usage that I don't know how to call it.  See example:

def hehe(tt):    
    return 'hehe'+tt()

@hehe
def test():
    return 'test'

print test

 
The output is same as:

def hehe(tt):    
    return 'hehe'+tt()

def test():
    return 'test'

test = hehe(test)

print test

  

Output:

hehetest

 

P.S: It enables such an easy way to invoke functions by strings! - cloud 

 

From http://www.pythonid.com/html/fenleiwenzhang/lang/20070910/185.html

 

2. Use "@staticmethod" to realize static method in Python (Python does not have keyword "static"):

class AClass():
    @staticmethod 
    def astatic():    # pay attention that there's no "self" here!
        print 'It's a static method!'

AClass.astatic()   

 

Output:

It's a static method!

 

By the way, there's another way to make a method static with a same output:

class AClass():
    def aclassmethod(): 
        print 'It's a static method!'
    aclassmethod = classmethod(aclassmethod)   # you can write "whatevername = classmethod(aclassmethod)" after Python2.5

  

 

From http://wiki.woodpecker.org.cn/moin/PythonEssentialRef7