simple proxy

simple_proxy.py

from collections import defaultdict


class Proxy:
  def __init__(self, instance):
    self.instance = instance
    self.last_call = None
    self.call_map = defaultdict(int)

  def __getattr__(self, name):
    self.last_call = name
    self.call_map[name] += 1
    return getattr(self, instance, name)

  def last_invoked_method(self):
    return self.last_call

  def count_of_calls(self, name):
    return self.call_map[name]

  def was_called(self, name):
    return self.call_map[name] > 0


class Foo:
  def bar(self, text):
    return f'bar: {text}'
    
  def baz(self, text):
    return f'baz: {text}'
    
  def qux(self, text):
    return f'qux: {text}'


proxy = Proxy(Foo())

proxy.foo('xyz')  
# foo: xyz

proxy.bla
# Traceback (most recent call last):
#   ...
# AttributeError: 'Foo' object has no attribute 'bla'