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- from astroid import arguments, inference_tip, nodes
- from astroid.exceptions import UseInferenceDefault
- from astroid.manager import AstroidManager
- def infer_namespace(node, context=None):
- callsite = arguments.CallSite.from_call(node, context=context)
- if not callsite.keyword_arguments:
- # Cannot make sense of it.
- raise UseInferenceDefault()
- class_node = nodes.ClassDef("Namespace", "docstring")
- class_node.parent = node.parent
- for attr in set(callsite.keyword_arguments):
- fake_node = nodes.EmptyNode()
- fake_node.parent = class_node
- fake_node.attrname = attr
- class_node.instance_attrs[attr] = [fake_node]
- return iter((class_node.instantiate_class(),))
- def _looks_like_namespace(node):
- func = node.func
- if isinstance(func, nodes.Attribute):
- return (
- func.attrname == "Namespace"
- and isinstance(func.expr, nodes.Name)
- and func.expr.name == "argparse"
- )
- return False
- AstroidManager().register_transform(
- nodes.Call, inference_tip(infer_namespace), _looks_like_namespace
- )
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