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import sys
from functools import partial
def find_entrypoints(group_name: str):
"""
Find entrypoints of a given group using either `importlib.metadata` or the
older `pkg_resources` mechanism.
Yields tuples of the entrypoint name and a callable function that will
load the actual entrypoint.
"""
if sys.version_info >= (3, 10):
# "Changed in version 3.10: importlib.metadata is no longer provisional."
try:
from importlib.metadata import entry_points
except ImportError:
pass
else:
eps = entry_points(group=group_name)
# Only do this if this implementation of `importlib.metadata` is
# modern enough to not return a dict.
if not isinstance(eps, dict):
for entry_point in eps:
yield (entry_point.name, entry_point.load)
return
try:
from pkg_resources import working_set
except ImportError:
pass
else:
for entry_point in working_set.iter_entry_points(group_name):
yield (entry_point.name, partial(entry_point.load, require=True))
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