The use of the function name

The use of the function name

⼀ function name is variable, but it is ⼀ a special variable, and can be performed with parentheses variable ⾏ function.

1, the memory address of the function name

DEF FUNC ():
　　Print ( " Oh " )
 Print (FUNC) 
Results:
 <function FUNC AT 0x1101e4ea0>

2, function name can be assigned to other variables

DEF FUNC ():
　　Print ( " Oh " )
 Print (FUNC) 
A = FUNC # to function as ⼀ variables for another time assigned to the variable 
A () # function call Use FUNC ()

3、

Function name can be used as an element of containers

DEF func1 ():
     Print ( " Oh " )
 DEF func2 ():
     Print ( " Oh " )
 DEF func3 ():
     Print ( " Oh " )
 DEF Func4 ():
     Print ( " Oh " ) 
LST = [func1, func2 , func3]
 for i in LST: 
     i ()

4, function name can be used as function parameters

DEF FUNC ():
     Print ( " eat it " )
 DEF func2 (the Fn):
     Print ( " I am func2 " ) 
     the Fn () # Perform pass over the Fn 
    Print ( " I am func2 " ) 
func2 (FUNC) # the parameters passed to the function func as func2 parameter fn.

5, the function name can be used as the return value of the function

DEF func_1 ():
     Print ( " individual cases from a function. 1 " )
     DEF func_2 ():
         Print ( " individual cases from a function 2 " )
     Print ( " individual cases from a function. 1 " )
     return func_2 
Fn = func_1 () # YES function 1. function 1 2 function returns, at this time point is the ⾯ fn 2 function 
fn () # perform the function returns ⾏ ⾯