Python: When non-integer is entered into input program crashes

Asked Jan 12 '17 at 13:44

Active Jan 12 '17 at 15:38

Viewed 473 times

Im making a program for my intro to python class project. Its a pokedex. I have everything setup but my friend brought up the fact that when he entered any non number or number over 151 would crash the program. I tried to do an elif statement to see if it isalpha() but when i tried it, it would print this error.

Traceback (most recent call last):
  File "python", line 712, in <module>
  File "<string>", line 1, in <module>
NameError: name 'a' is not defined

so i just need help stopping it from crashing when it has any input thats not valid. the full prgram is on this Link

#should define it here 
def print_userpoke_details(userpoke):
#take a parameter,the user input

    if userpoke == 1:
        print(Bulbasaur)
    elif userpoke.isalpha():
        print ("You did not enter a valid number")

while True:
    userpoke = input("Pokémon #:")
    #call the function here with user input
    print_userpoke_details(userpoke)

edited Jan 12 '17 at 15:38

Ma0

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asked Jan 12 '17 at 13:44

Jacob Robbins

3

fix your indentation please and keep in mind that whatever is passed from `input` is automatically converted into string. Even if it is a number so it would not be `5` for example but `'5'` – Ma0 Jan 12 '17 at 13:46
1

@Ev.Kounis no it isn't, OP is evidently using Python 2 where input evaluates its contents. – Daniel Roseman Jan 12 '17 at 13:46
@DanielRoseman How do you know that? The `print` is parenthesised – Ma0 Jan 12 '17 at 13:47
Because that is the error you get when you use input with a string in Python 2, see the linked duplicate. – Daniel Roseman Jan 12 '17 at 13:47
According to the `repl.it` link, OP is using v2.7 – Zach Gates Jan 12 '17 at 13:48
@Ev.Kounis parenthesised `print` works in both Python 2 and Python 3 – abukaj Jan 12 '17 at 13:48
@abukaj That i know but not many people used to parenthesise prints back then – Ma0 Jan 12 '17 at 13:50

Python: When non-integer is entered into input program crashes

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