How to check the validity of a string input from GUI in python

Question

I'm taking the input for a name in Tkinter, but it's giving an error when I want to check if only alphabets are entered:

t1=Label(text="Name:")
t1.place(x=40,y=100)
name=Entry(t)
if name.isalpha():
    print("Valid")
else:
    print("Invalid")

How do I check the validity of the input?

Please include the error you are getting. – Sergey Mar 19 '20 at 17:43 — Sergey, Mar 19 '20 at 17:43

10o · Answer 1 · 2020-03-19T17:40:48.277

0

You want to check the value of your input field. Use name.get().isalpha().

name is just a instance of Entry. You want the value of this entry field. You can get this by calling get() on the Entry instance.

isalpha() is defined on strings only.

edited Mar 19 '20 at 17:40

answered Mar 19 '20 at 17:36

10o

You should also mention that they need to wait to call that code until after the user has a chance to enter something. As written, the OP's code will run a millisecond after creating the entry widget. – Bryan Oakley Mar 19 '20 at 17:38

1 Answers1