Validating a users input

Question

I'm fairly new to Python and I'm using a while True loop. Inside that loop I have

Sentence= input("please enter a sentence").lower().split()

However I want to create validation so an error message appears when the user inputs a number instead of a letter. I was researching and saw the use of .isalpha. Would anyone where this would go in the whie true loop to create and error message for inputting numbers?

See: stackoverflow.com/questions/39488787/…

Laurent LAPORTE
– Laurent LAPORTE

2016-09-19 15:04:11 +00:00
Commented Sep 19, 2016 at 15:04 — Laurent LAPORTE
– Laurent LAPORTE, Commented Sep 19, 2016 at 15:04

John Gordon · Accepted Answer · 2016-09-19 15:04:54Z

1

sentence = input("please enter a sentence").lower().split() for word in sentence: if not word.isalpha(): print("The word %s is not alphabetic." % word)

answered Sep 19, 2016 at 15:04

John Gordon

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1 Comment

Codee Over a year ago

Thank you I completely get it! Is there a way to keep repreating the question until letters are inputted?

nauer · Accepted Answer · 2016-09-19 15:29:21Z

Something like this?

sentence = input("please enter a sentence: ").lower().split() while False in [word.isalpha() for word in sentence]: sentence = input("Do not use digits. Enter again: ").lower().split()

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