python-datamodel - Read For Learn

Is there a built-in function to print all the current properties and values of an object?

You are really mixing together two different things. Use dir(), vars() or the inspect module to get what you are interested in (I use __builtins__ as an example; you can use any object instead). Print that dictionary however fancy you like: or Pretty printing is also available in the interactive debugger as a command:

What are metaclasses in Python?

A metaclass is the class of a class. A class defines how an instance of the class (i.e. an object) behaves while a metaclass defines how a class behaves. A class is an instance of a metaclass. While in Python you can use arbitrary callables for metaclasses (like Jerub shows), the better approach is to make it … Read more