How to get the list of all initialized objects and function definitions alive in python?

Yes.

>>> import gc>>> gc.get_objects()

Not that you'll find that useful. There is a lot of them. :-) Over 4000 just when you start Python.

Possibly a bit more useful is all the variables active locally:

>>> locals()

And the one active globally:

>>> globals()

(Note that "globally" in Python isn't really global as such. For that, you need the gc.get_objects() above, and that you are unlikely to ever find useful, as mentioned).

The function gc.get_objects() will not find all objects, e.g. numpy arrays will not be found.

import numpy as npimport gca = np.random.rand(100)objects = gc.get_objects()print(any[x is a for x in objects])# will not find the numpy array

You will need a function that expands all objects, as explained here

# code from https://utcc.utoronto.ca/~cks/space/blog/python/GetAllObjectsimport gc# Recursively expand slist's objects# into olist, using seen to track# already processed objects.def _getr(slist, olist, seen):  for e in slist:    if id(e) in seen:      continue    seen[id(e)] = None    olist.append(e)    tl = gc.get_referents(e)    if tl:      _getr(tl, olist, seen)# The public function.def get_all_objects():  """Return a list of all live Python  objects, not including the list itself."""  gcl = gc.get_objects()  olist = []  seen = {}  # Just in case:  seen[id(gcl)] = None  seen[id(olist)] = None  seen[id(seen)] = None  # _getr does the real work.  _getr(gcl, olist, seen)  return olist

Now we should be able to find most objects

import numpy as npimport gca = np.random.rand(100)objects = get_all_objects()print(any[x is a for x in objects])# will return True, the np.ndarray is found!

Try globals()