Missing return in abstract property fails in pylint 2.5.0

[pehala]

I have encountered an error when using abstract properties and multiple inheritance. The code itself works in it returns a correct value but it seems that pylint tries to check the abstract property for return which it doesn't have, interestingly the same code without property works with pylint. Adding an empty return statement to C class also fixes this issue.

Steps to reproduce

Sample Code:

from abc import abstractmethod


class A:
   @property
   def test(self):
       return "super"


class C:
   @property
   @abstractmethod
   def test(self):
       "abstract method"


class B(A, C):

   @property
   def test(self):
       try:
           return super().test
       except KeyError:
           x = "x"
           return f"http://%s-production.{x}"

b = B()
print(b.test)

Current behavior

Traceback (most recent call last):
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/bin/pylint", line 8, in <module>
    sys.exit(run_pylint())
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/__init__.py", line 22, in run_pylint
    PylintRun(sys.argv[1:])
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/lint/run.py", line 338, in __init__
    linter.check(args)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 871, in check
    self.get_ast, self._iterate_file_descrs(files_or_modules)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 904, in _check_files
    self._check_file(get_ast, check_astroid_module, name, filepath, modname)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 930, in _check_file
    check_astroid_module(ast_node)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 1063, in check_astroid_module
    ast_node, walker, rawcheckers, tokencheckers
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 1107, in _check_astroid_module
    walker.walk(ast_node)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 75, in walk
    self.walk(child)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 75, in walk
    self.walk(child)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 75, in walk
    self.walk(child)
  [Previous line repeated 2 more times]
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 72, in walk
    callback(astroid)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/pylint/checkers/typecheck.py", line 958, in visit_attribute
    for n in owner.getattr(node.attrname)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/astroid/objects.py", line 206, in getattr
    return list(self.igetattr(name, context=context))
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/astroid/objects.py", line 190, in igetattr
    yield from function.infer_call_result(caller=self, context=context)
  File "/home/phala/.local/share/virtualenvs/3scale-py-testsuite-FxueJDku/lib/python3.6/site-packages/astroid/scoped_nodes.py", line 1714, in infer_call_result
    "The function does not have any return statements"
astroid.exceptions.InferenceError: The function does not have any return statements

Expected behavior

To only report linting errors

pylint --version output

pylint 2.5.0
astroid 2.4.0
Python 3.6.10 (default, Dec 20 2019, 00:00:00) 
[GCC 9.2.1 20190827 (Red Hat 9.2.1-1)]

[GliderGeek]

I had the same problem with pylint 2.3.0
Fixed it (temporarily) by pinning astroid: astroid==2.3.3