[python] Python Variable Declaration

Variables have scope, so yes it is appropriate to have variables that are specific to your function. You don't always have to be explicit about their definition; usually you can just use them. Only if you want to do something specific to the type of the variable, like append for a list, do you need to define them before you start using them. Typical example of this.

list = []
for i in stuff:
  list.append(i)

By the way, this is not really a good way to setup the list. It would be better to say:

list = [i for i in stuff] # list comprehension

...but I digress.

Your other question. The custom object should be a class itself.

class CustomObject(): # always capitalize the class name...this is not syntax, just style.
  pass
customObj = CustomObject()

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