Inline refactoring fails when the inlined method has type hints

[lieryan]

Describe the bug

Inlining a method whose signature contains type hints fails with an exception.

Removing the type hints, the inlining works just fine.

To Reproduce
Steps to reproduce the behavior:

1. Code before refactoring:

def foo(hello: str):
    print(hello)

foo("hello")

2. Describe the refactoring you want to do: Inline foo

3. Expected code after refactoring:

print("hello")

4. Describe the error or unexpected result that you are getting

2021-11-03 15:11:44,510 AEDT - ERROR - pylsp_rope.plugin - Exception when doing workspace/executeCommand: Attribute hello: str not found
Traceback (most recent call last):
  File "/home/lieryan/Projects/pylsp-rope/pylsp_rope/plugin.py", line 128, in pylsp_execute_command
    return commands[command](workspace, **arguments[0])()
  File "/home/lieryan/Projects/pylsp-rope/pylsp_rope/plugin.py", line 152, in __call__
    rope_changeset = self.get_changes()
  File "/home/lieryan/Projects/pylsp-rope/pylsp_rope/plugin.py", line 262, in get_changes
    rope_changeset = refactoring.get_changes()
  File "/home/lieryan/.virtualenvs/pylsp-rope/lib/python3.9/site-packages/rope/refactor/inline.py", line 153, in get_changes
    self._defining_file_changes(
  File "/home/lieryan/.virtualenvs/pylsp-rope/lib/python3.9/site-packages/rope/refactor/inline.py", line 203, in _defining_file_changes
    result = move.ModuleSkipRenamer(
  File "/home/lieryan/.virtualenvs/pylsp-rope/lib/python3.9/site-packages/rope/refactor/move.py", line 842, in get_changed_module
    self.handle.occurred_outside_skip(change_collector, occurrence)
  File "/home/lieryan/.virtualenvs/pylsp-rope/lib/python3.9/site-packages/rope/refactor/inline.py", line 568, in occurred_outside_skip
    definition, returned = self.generator.get_definition(
  File "/home/lieryan/.virtualenvs/pylsp-rope/lib/python3.9/site-packages/rope/refactor/inline.py", line 409, in get_definition
    return self._calculate_definition(primary, pyname, call, host_vars, returns)
  File "/home/lieryan/.virtualenvs/pylsp-rope/lib/python3.9/site-packages/rope/refactor/inline.py", line 465, in _calculate_definition
    pyname = pymodule[name]
  File "/home/lieryan/.virtualenvs/pylsp-rope/lib/python3.9/site-packages/rope/base/pyobjects.py", line 26, in __getitem__
    return self.get_attribute(key)
  File "/home/lieryan/.virtualenvs/pylsp-rope/lib/python3.9/site-packages/rope/base/pyobjects.py", line 201, in get_attribute
    raise exceptions.AttributeNotFoundError("Attribute %s not found" % name)
rope.base.exceptions.AttributeNotFoundError: Attribute hello: str not found

Screenshots
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Editor information (please complete the following information):

• Project Python version: Python 3.9
• Rope Python version: Python 3.9
• Rope version: 0.21.0