from typing import Dict, List
from ..package_exporter import PackagingError
__all__ = ["find_first_use_of_broken_modules"]
def find_first_use_of_broken_modules(exc: PackagingError) -> Dict[str, List[str]]:
"""
Find all broken modules in a PackagingError, and for each one, return the
dependency path in which the module was first encountered.
E.g. broken module m.n.o was added to a dependency graph while processing a.b.c,
then re-encountered while processing d.e.f. This method would return
{'m.n.o': ['a', 'b', 'c']}
Args:
exc: a PackagingError
Returns: A dict from broken module names to lists of module names in the path.
"""
assert isinstance(exc, PackagingError), "exception must be a PackagingError"
uses = {}
broken_module_names = [
m for m, attr in exc.dependency_graph.nodes.items() if attr.get("error", False)
]
for module_name in broken_module_names:
path = exc.dependency_graph.first_path(module_name)
uses[module_name] = path
return uses