Dear All
Very basic question from a newbie.
I have defined a function for asking a question within a range
def user_choice(question, low, high, step = 1):
"""Define user choice"""
choice = None
while choice not in range(low, high, step):
choice = int(input(question))
return choice
If user enters a string rather than a number it creates this error
Traceback (most recent call last):
File "/home/wibble/bhdevices.py", line 100, in <module>
choice = user_choice("Choose an option: ", 0, CHOICES)
File "/home/wibble/bhdevices.py", line 53, in user_choice
choice = int(input(question))
ValueError: invalid literal for int() with base 10: 'd'
How do I make it show a message to users saying only numbers excepted
and then the loop continues?
I have tried this but same error is still generated.
def user_choice(question, low, high, step = 1):
"""Define user choice"""
choice = None
while choice not in range(low, high, step):
choice = int(input(question))
if choice == str(input(question)):
print('Numbers only please!')
return choice
Do I need to create another while loop within this loop to handle a
string input?
Any assistance would be greatly appreciated.
Kind regards
Andrew.
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