Turn string with operations into int?

Question

I am trying to create a short program to do a task. Unfortunately I keep getting an error. The problem boils down to the following.

If I try to run:

line = "1+1"
int(line)

I would like it to return

2

However I get the following error:

invalid literal for int() with base 10: '1+1'

From looking online this is due to the fact that Python cannot recognize the fact that I have used a non-number. However without some rework I can't get around this.

I was hoping that there is a straight forward method for solving this. I have tried using float but that has the same problem.

Answer 1

You can use the eval function.

    eval("1 + 1")

Answer 2

You could use ast.literal_eval:

import ast

line = "1+1"
print(ast.literal_eval(line))
# 2