How to use @ in python

In Python functions, you will occasionally see that the previous line of the function definition is modified with @functionName. When the interpreter reads the modifier of @, it will first parse the content after @, and directly put @ on the next line. The function or class is used as the parameter of the function after @, and then the return value is assigned to the function object modified in the next line.

For example:
@a
@b
def c():
...
Python will treat the respective function results as the next one in bottom-up order The input of the function (the function above), which is a(b(c()))

def funcA(A):    
print("function A")def funcB(B):    
print(B(2))    print("function B")
@funcA@funcBdef func(c):   
 print("function C")    
 return c**2

4
function B
function A

• Then the execution process of the entire program is funA(funB(funC))

The above is the detailed content of How to use @ in python. For more information, please follow other related articles on the PHP Chinese website!