[ Python 常見問題 ] Currying decorator in python

Source From Here 
Question 
I am trying to write a currying decorator as @curry in python so the function can be: 

view plaincopy to clipboardprint?

1. @curry  
2. def myfun(a,b,c):  
3.     print("{}-{}-{}".format(a,b,c))  
4.       
5. myfun(1, 2, 3)  
6. myfun(1, 2)(3)  
7. myfun(1)(2)(3)   

How-To 
If you are using Python2: 

view plaincopy to clipboardprint?

1. def curry(x, argc=None):  
2.     if argc is None:  
3.         argc = x.func_code.co_argcount  
4.     def p(*a):  
5.         if len(a) == argc:  
6.             return x(*a)  
7.         def q(*b):  
8.             return x(*(a + b))  
9.         return curry(q, argc - len(a))  
10.     return p  
11.   
12. @curry  
13. def myfun(a,b,c):  
14.     print '%d-%d-%d' % (a,b,c)  

In Python3: 

view plaincopy to clipboardprint?

1. from inspect import signature  
2.   
3. def curry(x, argc=None):  
4.     if argc is None:  
5.         argc = len(signature(x).parameters)  
6.           
7.     def p(*a):  
8.         if len(a) == argc:  
9.             return x(*a)  
10.         def q(*b):  
11.             return x(*(a + b))  
12.         return curry(q, argc - len(a))  
13.     return p  
14.   
15. @curry  
16. def myfun(a,b,c):  
17.     print("{}-{}-{}".format(a,b,c))  
18.       
19. myfun(1, 2, 3)  
20. myfun(1, 2)(3)  
21. myfun(1)(2)(3)  

Output: 

1-2-3
1-2-3
1-2-3

Supplement 
* How can I find the number of arguments of a Python function?