Please explain exec function in python

Question

https://code.sololearn.com/caBuKEOtLwyR/?ref=app

Answer 1

Exec simply executes the commands you wrote in the sting as if you wrote it directly in the source code

Tip: everything in python has a __doc__ string that tells you everything you need to know regarding that thing

Answer 2

As explained in other questions, eval / exec are considered bad practice because they're generally abused to do a task where they aren't needed, leading to potential security issues and generally bad programming.

thanks to Rik Wittkopp sir for explaining the dark side of this function

Answer 3

No, exec and eval are not the same

eval just evaluates an expression and returns the result

So you cannot do things like eval("x=1") or eval("if a: print(b)")
(statements)

On the other hand you cannot use exec for evaluation:
exec("a+b") is possible but useless (exec always returns None)
but you can do exec("x=a+b")

Answer 4

Angelo

exec() is same as eval() ??