String to syntax Python

Question

I use configparser to get values for my python script, but I need to call function stored in config.ini... Since all values in configparser are stored as strings, is it possible to transform string into syntax? If so, how?

You can exec the string, or I suppose eval if it is a lambda expression ... — mgilson
– mgilson, Commented May 19, 2013 at 18:12

user1786283 · Accepted Answer · 2013-05-19 18:12:38Z

1

You can try using eval, documentation here.

Or you can try exec, documentation here.

By be careful, these are just quick and dirty way.

A better and much more safer method is to use getattr() (documentation) and setattr() (documentation) which indexes into globals.

answered May 19, 2013 at 18:12

user1786283

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1 Comment

Blender Over a year ago

@Mirac7: ast.literal_eval is the safe way. It won't handle actual Python expressions like 'a' + 'b', but it will transform literal strings like [1, 2] and {'a': 'b'} into Python objects. eval() is easily exploitable.

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