Calling a varible from a string

Question

I have some code like:

G = 'Hello!'
variable = input('Enter a letter').upper()

I then want the program to print 'Hello!' when the user enters the letter G. How can I do this? Is exec() useful for the task? I saw some mentions of it, but I didn't understand how to use it.

[**Do not ever use `eval` (or `exec`) on data that could possibly come from outside the program in any form. It is a critical security risk. You allow the author of the data to run arbitrary code on your computer.**](https://stackoverflow.com/questions/1832940/why-is-using-eval-a-bad-practice) — Karl Knechtel, Jul 04 '22 at 23:24

score 0 · Answer 1 · edited Jul 04 '22 at 23:24

0

Use locals():

a = 'foo'
locals()['a']
'foo'

edited Jul 04 '22 at 23:24

Karl Knechtel

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answered Jun 17 '16 at 15:47

Benjamin

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Thanks for helping, could you please explain what locals is - as I don't understand how this works – George Willcox Jun 17 '16 at 15:50
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This is almost never the right solution. – jonrsharpe Jun 17 '16 at 15:51

Calling a varible from a string

1 Answers1