def great(a,b,c):
    if(a>b and a>c):
        print("a is greater")
    elif(b>a and b>c):
        print("b is greater")
    else:
        print("c is greater")
        a=great(12,3,1)
        print(a)

Can you explain why none is printing in output?

CodePudding user response：

In python indentation matters, Your Function Call is not Properly indented that is why it is not printing anything

def great(a,b,c):
    if(a>b and a>c):
        print("a is greater")
    elif(b>a and b>c):
        print("b is greater")
    else:
        print("c is greater")
a=great(12,3,1)
print(a)

CodePudding user response：

Because your great function is returning None.

Here is the solution:

def great(a,b,c):
    if(a>b and a>c):
        print("a is greater")
    elif(b>a and b>c):
        print("b is greater")
    else:
        print("c is greater")
great(12,3,1)

CodePudding user response：

function great() does not return anything. In python, when nothing is returned in a function, a default 'None' value is returned. So when use:

a=great(12,3,1)

it returns None value. That value is assigned to a. Therefore, when you print a you get None.

Check out this link for more:

https://realpython.com/python-return-statement/#:~:text=Implicit return Statements,-A Python function&text=That default return value will always be None .&text=If you don't supply,None as a return value.