In Python, both `math` and `turtle` modules have `degrees` and `radians` methods, but when I want to use them from `math` module, Geany suggests me the wrong signature (see image below). The signature is right if I use them from `turtle` module. 
Also I noticed that the signature doesn't appear for all methods of a given module (e.g. no suggestions appear typing `math.atan(`).
Till now I've tested only these two modules.
This is because `math` is not a Python module, its built into the C code of Python, so the Python tags parser can't see it to create the tags. This will apply to all things built into the C code, a tags file will have to be generated in some other manner, pull requests are welcome.
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