How do I extend a python module? Adding new functionality to the `python-twitter` package

A few ways. The easy way: Don’t extend the module, extend the classes. exttwitter.py import twitter class Api(twitter.Api): pass # override/add any functions here. Downside : Every class in twitter must be in exttwitter.py, even if it’s just a stub (as above) A harder (possibly un-pythonic) way: Import * from python-twitter into a module that … Read more

Python modules with submodules and functions

A folder with .py files and a __init__.py is called a package. One of those files containing classes and functions is a module. Folder nesting can give you subpackages. So for example if I had the following structure: mypackage __init__.py module_a.py module_b.py mysubpackage __init__.py module_c.py module_d.py I could import mypackage.module_a or mypackage.mysubpackage.module_c and so on. … Read more

Python — Check if object is instance of any class from a certain module

You can use inspect.getmembers to get all the classes in your module: inspect.getmembers(my_module,inspect.isclass) This will return a list of name-class pairs. You just want the classes: my_module_classes = tuple(x[1] for x in inspect.getmembers(my_module,inspect.isclass)) One thing that I managed to overlook when I initially wrote this answer is the ability to check a class’s __module__ attribute. … Read more

Modules are installed using pip on OSX but not found when importing

Here the answer that worked, which is basically what has been explained in the comments of the question. However, I thought it would be useful to have it explained as a clear and well structured answer. As highlighted, the problem was that I was not using the interpreter that pip was installing for. The command … Read more

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