What is the usage of python return

Python return usage: 1. Return the return value of the function; 2. Terminate the running of the program and exit early. For example, when an error occurs in the function, use return to terminate the running of the function.

The operating environment of this tutorial: Windows 7 system, python version 3.9, DELL G3 computer. This method is suitable for all brands of computers.

python return usage:

(1), return the return value of the function

(2), terminate the running of the program, and exit early.( For example: when an error occurs within a function, use return to terminate the function)

def testReturn(x):  
    if x > 10000:  
        return  
        print "test return!!" #这句话永远不会得到执行  
     elif x > 1000:  
        return 100  
    elif x > 100:  
        return 10  
    elif x > 10:  
        return 1  
    else:  
        return 0  
  
 print testReturn(9999999) #result = None  
 print testReturn(9999)    #return = 100  
 print testReturn(999)     #return = 10  
 print testReturn(99)      #return = 1  
 print testReturn(9)       #return = 0

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