The difference between using eval () and Ast.literal_eval () in Python

The Eval function is useful for converting data types in Python. Its role is to restore the data to itself or to a data type that can be transformed into.

So what is the difference between Eval and Ast.literal_val ()?

Eval does not know what to convert before doing the calculation is not a valid (secure) Python data type. Just calculate when calling the function. If the computed content is not a valid Python type, an exception is thrown.

Ast.literal will determine whether the content that needs to be computed is not a valid Python type after calculation, and if it does, it will not perform the operation.

------------------------------quoted from StackOverflow--------------------------------

datamap = eval(raw_input(‘Provide some data here: ‘)means that actually evaluate the codebeforeYou deem it to is unsafe or not. It evaluates the code as soon as the function is called. See also the dangers ofeval.

ast.literal_evalRaises an exception if the input isn ' t a valid Python datatype, so the code won ' t is executed if it's not.

Use  ast.literal_eval  whenever you need eval . If you have a Python expressions as an input so want to evaluate, you shouldn ' t (with them).

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Edited Mar 4 ' at 8:59

answeredMar 4 ' at 8:52Volatility 13.4k 3 26 -

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The difference between using eval () and Ast.literal_eval () in Python