Python high-order functions

In Python, the function name is also a variable that can be assigned

The function name can also be used as a function parameter, and it can also be used as a function return value

1 def f (n): 2     return n  3  4def  foo (a,b,func):  5  6 7     Ret=func (a) +func (b)  8     return  ret  9  Print(foo (1,2,f))

Operation Result: 5

1 def Foo3 (): 2 3     def inner (): 4         return 8 5  6     return  inner  7  8 ret= Foo3 () 9 Ten # print (ret)  One Print (Ret ())

Result is 8

Python high-order functions