how do you distinguish numpy arrays from Python's built-in objects
You may use a prefix np_ for numpy arrays, thus distinguishing them from other variables.
PEP8 has naming conventions for e.g. functions (lowercase), classes (CamelCase) and constants (uppercase).
It seems to me that distinguishing between numpy arrays and built-ins such as lists is probably more important as the same operators such as "+" actually mean something totally different.
Does anyone have any naming conventions to help with this?