AttributeError: 'NoneType' object has no attribute '_fields' exception with Python3.8 #4
Description
I tried running this on https://github.com/terrapower/armi as part of terrapower/armi#112 but ran into the following exception. I'm using Python 3.8.
Invocation was: $ python camel_snake_pep8.py . *.py */*.py
Traceback (most recent call last):
File "camel_snake_pep8.py", line 857, in <module>
main()
File "camel_snake_pep8.py", line 801, in main
rope.base.libutils.analyze_modules(project) # Analyze all the modules.
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/libutils.py", line 82, in analyze_modules
analyze_module(project, resource)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/libutils.py", line 70, in analyze_module
project.pycore.analyze_module(resource)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pycore.py", line 209, in analyze_module
rope.base.oi.soa.analyze_module(
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soa.py", line 15, in analyze_module
_analyze_node(pycore, pymodule, should_analyze,
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soa.py", line 38, in _analyze_node
rope.base.ast.walk(child, visitor)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 42, in walk
walk(child, walker)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 40, in walk
return method(node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soa.py", line 76, in _Call
self._call(pyfunction, args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soa.py", line 93, in _call
self.follow(pyfunction)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soa.py", line 31, in _follow
_analyze_node(pycore, pyfunction, return_true,
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soa.py", line 38, in _analyze_node
rope.base.ast.walk(child, visitor)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 42, in walk
walk(child, walker)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 40, in walk
return method(node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soa.py", line 117, in _Assign
rope.base.ast.walk(child, self)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 40, in walk
return method(node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soa.py", line 76, in _Call
self._call(pyfunction, args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soa.py", line 88, in _call
pyfunction, args.get_arguments(pyfunction.get_param_names()))
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/arguments.py", line 20, in get_arguments
for pyname in self.get_pynames(parameters):
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/arguments.py", line 33, in get_pynames
result[index] = self._evaluate(arg)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/arguments.py", line 41, in _evaluate
return rope.base.evaluate.eval_node(self.scope, ast_node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 27, in eval_node
return eval_node2(scope, node)[1]
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 32, in eval_node2
ast.walk(node, evaluator)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 40, in walk
return method(node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 189, in _Call
pyobject=_get_returned(pyfunction))
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 170, in _get_returned
return pyobject.get_returned_object(args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pyobjectsdef.py", line 73, in get_returned_object
return self.returned.get(args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 29, in newfunc
return func(self, *args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pynames.py", line 189, in get
self.set(self.get_inferred(*args, **kwds))
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pyobjectsdef.py", line 45, in _infer_returned
return rope.base.oi.soi.infer_returned_object(self, args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 41, in newfunc
return func(*args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 25, in infer_returned_object
result = _infer_returned(pyfunction, args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 111, in _infer_returned
resulting_pyname = evaluate.eval_node(scope, returned_node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 27, in eval_node
return eval_node2(scope, node)[1]
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 32, in eval_node2
ast.walk(node, evaluator)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 40, in walk
return method(node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 163, in _Call
primary, pyobject = self._get_primary_and_object_for_node(node.func)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 292, in _get_primary_and_object_for_node
primary, pyname = eval_node2(self.scope, stmt)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 32, in eval_node2
ast.walk(node, evaluator)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 40, in walk
return method(node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 152, in _Attribute
pyname = eval_node(self.scope, node.value)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 27, in eval_node
return eval_node2(scope, node)[1]
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 32, in eval_node2
ast.walk(node, evaluator)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 40, in walk
return method(node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 300, in _Subscript
self._call_function(node.value, '__getitem__',
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 312, in _call_function
pyobject = pyname.get_object()
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pynamesdef.py", line 22, in get_object
return self.pyobject.get()
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 29, in newfunc
return func(self, *args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pynames.py", line 189, in get
self.set(self.get_inferred(*args, **kwds))
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 29, in newfunc
return func(self, *args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pynamesdef.py", line 19, in _get_inferred
return rope.base.oi.soi.infer_assigned_object(self)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 41, in newfunc
return func(*args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 71, in infer_assigned_object
result = _infer_assignment(assignment, pyname.module)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 41, in newfunc
return func(*args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 142, in _infer_assignment
result = _follow_pyname(assignment, pymodule)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 41, in newfunc
return func(*args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 175, in _follow_pyname
pyname = evaluate.eval_node(holding_scope, assign_node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 27, in eval_node
return eval_node2(scope, node)[1]
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 32, in eval_node2
ast.walk(node, evaluator)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 40, in walk
return method(node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 189, in _Call
pyobject=_get_returned(pyfunction))
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 170, in _get_returned
return pyobject.get_returned_object(args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pyobjectsdef.py", line 73, in get_returned_object
return self.returned.get(args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 29, in newfunc
return func(self, *args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pynames.py", line 189, in get
self.set(self.get_inferred(*args, **kwds))
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pyobjectsdef.py", line 45, in _infer_returned
return rope.base.oi.soi.infer_returned_object(self, args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 41, in newfunc
return func(*args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 25, in infer_returned_object
result = _infer_returned(pyfunction, args)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 114, in _infer_returned
pyobject = resulting_pyname.get_object()
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pynamesdef.py", line 22, in get_object
return self.pyobject.get()
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 29, in newfunc
return func(self, *args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pynames.py", line 189, in get
self.set(self.get_inferred(*args, **kwds))
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 29, in newfunc
return func(self, *args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/pynamesdef.py", line 19, in _get_inferred
return rope.base.oi.soi.infer_assigned_object(self)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 41, in newfunc
return func(*args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 71, in infer_assigned_object
result = _infer_assignment(assignment, pyname.module)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 41, in newfunc
return func(*args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 142, in _infer_assignment
result = _follow_pyname(assignment, pymodule)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/utils/__init__.py", line 41, in newfunc
return func(*args, **kwds)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/oi/soi.py", line 175, in _follow_pyname
pyname = evaluate.eval_node(holding_scope, assign_node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 27, in eval_node
return eval_node2(scope, node)[1]
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 32, in eval_node2
ast.walk(node, evaluator)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 40, in walk
return method(node)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 236, in _Dict
keys = self._get_object_for_node(node.keys[0])
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 285, in _get_object_for_node
pyname = eval_node(self.scope, stmt)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 27, in eval_node
return eval_node2(scope, node)[1]
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/evaluate.py", line 32, in eval_node2
ast.walk(node, evaluator)
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 41, in walk
for child in get_child_nodes(node):
File "/opt/venvs/armi/lib/python3.8/site-packages/rope/base/ast.py", line 49, in get_child_nodes
if node._fields is not None:
AttributeError: 'NoneType' object has no attribute '_fields'