Help!!

[prem_koresh_avraham]

def hint_username(username):
    if len(username) < 3:
        print("Invalid username. Usernames must have more than 3 characters")
    else:
        print("valid username")
        
print (hint_username("charmingchand"))

OUTPUT

Output:
valid username
None

I would like to know why is none appearing here?

buran write Feb-22-2024, 12:00 PM:
Please, use proper tags when post code, traceback, output, etc. This time I have added tags for you.
See BBcode help for more info.

[menator01]

You are using print twice. Once in the function and when calling the function.
Please use the bbtags when posting code. You should have a look at the help section on how to ask a question.

Quick example:

def afunc(arg):
    return arg

def afunc2(arg):
    print(arg)

print(afunc('I am using a return value and print'))

afunc2('Callinga function that has a print')

print(afunc2('Using both prints. This will return a None'))

Output:
I am using a return value and print
Calling a function that has a print
Using both prints. This will return a None
None

[paul18fr]

In addition to what it has previously said, that's the return content which is returned using print (None by default if not specified)

def hint_username(username):
    if len(username) < 3:
        print("Invalid username. Usernames must have more than 3 characters")
    else:
        print("valid username")        
    return None
         
hint_username("charmingchand")
hint_username("ff")
print()

# with print
print(hint_username("\n"))
print(hint_username("ddddddddddddddddddddddddd\n"))

Output:
valid username
Invalid username. Usernames must have more than 3 characters

Invalid username. Usernames must have more than 3 characters
None
valid username
None