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I want to execute a correct Python program using exec() and then get variables and their values after executing. Google says that I should create a dictionary and write the result of execution there: exec(code_object) in variables. But unfortunately that doesn't in Python 3.

kenorb
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emilchess
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  • possible duplicate of [Behaviour of exec function in Python 2 and Python 3](http://stackoverflow.com/questions/15086040/behaviour-of-exec-function-in-python-2-and-python-3) – Martijn Pieters Jan 12 '15 at 14:19

1 Answers1

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The code in Python 3 should be:

exec(code_object, variables)

This syntax is also Python 2 compatible.

exec(code_object) in variables

would compile and run in Python 3 but do something completely different from Python 2 - it would execute the code_object in current scope; the exec would return None; then the expression None in variables would evaluate False since None is not a key in variables; the result would be dropped - thus neither compile time nor possibly run-time error occurs, except for code_object seeing the wrong scope.

Community
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Antti Haapala -- Слава Україні
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