Python3 dynamic import with exec - why does 'as' not be executed?

Question

I have this code that carry module manually

exec("import" + moduleName + " as selectedModule")
importlib.reload(selectedModule)

But this code make

name 'seletedModule' is not defined

It is not happened on python2.x. How to import this on python3?

Answer 1

If you need to import a library dynamically, don't use exec , its not safe .

Use importlib.import_module instead.

selected_module = importlib.import_module(module_name)
importlib.reload(selected_module)

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As for the error you're getting: you're probably calling exec within a function scope, thus you'll need you manually set globals and locals to be the same in exec ( Using a function defined in an exec'ed string in Python 3 ). Workaround:

exec("<do-stuff>", globals())