User enters an input like this: 4*3**2 Is there anyway to perform this, as a python code (not string)? I mean something like this:
x = input('Enter a operation: ') # 4*3**2
print('Answer is:', x) # expect: 'Answer is: 36'
Asked
Active
Viewed 46 times
0
DANIEL1475
- 5
- 3
-
1How long evaluated code supposed to be? – Stepan Dyatkovskiy Aug 17 '21 at 06:26
-
Related: https://stackoverflow.com/questions/15168765/how-to-get-value-of-variable-entered-from-user-input – tripleee Aug 17 '21 at 06:27
1 Answers
3
You could use eval:
x = input('Enter a operation: ')
print('Answer is:', eval(x))
But the problem is that eval is unsafe and inefficient, see this for more information.
U12-Forward
- 65,118
- 12
- 70
- 89
-
Hmm. But if someone could see ```eval()``` it could turn out to be really dangerous – Aug 17 '21 at 06:24
-
-
its insecure, because user can enter other thing and reveal my code, (is it correct?) so what if I use if statement to limit user and let him just use some special characters, like 1-9 and * and / and + and - ....? – DANIEL1475 Aug 17 '21 at 13:12