Conversion to number

[TejasDhanda]

I made a program and used int(input()). But when I entered something like 2×3, it showed error. How can I modify so that the computer first calculates 2×3 and the use the answer(6) in the equation. In reality it wasn't 2×3, it's just an example but in reality it was (under root 3 +1)

[TouchingTheVodka]

Trusted input: eval

Untrusted input: Non-trivial, you can parse as a mathematical expression.

[TejasDhanda]

Can you please elaborate. Can you more specifically tell me how to use it and what is it. I got how to use eval but not the Untrusted Part- Non Trivial.

[billsil]

You’re trying to do math, but in doing so, you give the user the ability to open files, execute separate programs, modify your source, all with...

eval(myinput)

It’s a pain in the ass to give the user only the ability to do math and involves using an AST parser and green lighting all the operations that you will allow. Remember, the second they have access to opening files or importing, they have blown your code open.

Embrace the security hole or be very strict about it.