How to evaluate Python expressions

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Evaluate Python expressions

We all know the eval function, but do we know the literal_eval function? Maybe a lot of people don't know. You can do this:

Import ast my_list = ast.literal_eval (expr)

Instead of doing the following:

Expr = "[1,2,3]" my_list = eval (expr)

I believe this is the first time this form has been seen for most people, but in fact it has been around in Python for a long time.

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