[Tutor] (no subject)

[Alan Gauld]

On 18/10/2020 08:58, Aliyan Navaid wrote:
>    I want to write a program which list ALL the errors while entering a user
>    name.
> 
>    (If I use if elif blocks the program will end at the first error it
>    catches)

You have just answered your own question.
Stop using elif clauses. Just use if.

hasErrors = False
if characters < 3:
    print(“Username too short”)
    hasErrors = True
if characters > 50:
    print(“Username too long”)
    hasErrors = Trueif special_characters:
    print(“Special characters not allowed”)
    hasErrors = True
if not hasErrors:
   print(“Username is valid”)

if hasErrors:   # Now do something to recover!


But it must be said that its an unusual strategy.
Most programs detect the first error and stop.

-- 
Alan G
Author of the Learn to Program web site
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