New submission from Pedro Algarvio <[email protected]>:
With `pkg_resources` an `EntryPoint` has a dist attribute which allows you to
get the distribution that provided that specific entry-point, however, with
`importlib.metafata` and `importlib_metadata` that's not an east task.
```python
USE_IMPORTLIB_METADATA_STDLIB = USE_IMPORTLIB_METADATA = False
try:
# Py3.8+
import importlib.metadata
USE_IMPORTLIB_METADATA_STDLIB = True
except ImportError:
# < Py3.8 backport package
import importlib_metadata
USE_IMPORTLIB_METADATA = True
def get_distribution_from_entry_point(entry_point):
loaded_entry_point = entry_point.load()
if isinstance(loaded_entry_point, types.ModuleType):
module_path = loaded_entry_point.__file__
else:
module_path = sys.modules[loaded_entry_point.__module__].__file__
if USE_IMPORTLIB_METADATA_STDLIB:
distributions = importlib.metadata.distributions
else:
distributions = importlib_metadata.distributions
for distribution in distributions():
try:
relative = pathlib.Path(module_path).relative_to(
distribution.locate_file("")
)
except ValueError:
pass
else:
if relative in distribution.files:
return distribution
```
The above solution has the additional drawback that you're iterating the
distributions list, once per EntryPoint, which, was already iterated to get the
entry-points listing.
I propose we attach the Distribution instance to each of the found EntryPoint
to avoid this low performance workaround.
I don't have an issue with providing a pull-request, but should that pull
request be done against `importlib_metadata` or `importlib.metadata`?
----------
components: Library (Lib)
messages: 381211
nosy: jaraco, s0undt3ch
priority: normal
severity: normal
status: open
title: No easy way to get the distribution which provided a
importlib.metadata.EntryPoint
type: enhancement
_______________________________________
Python tracker <[email protected]>
<https://bugs.python.org/issue42382>
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