Message334484
For instance:
# `a` is an empty directory, a PEP 420 namespace package
>>> import importlib.util
>>> importlib.util.find_spec('a')
ModuleSpec(name='a', loader=None, origin='namespace', submodule_search_locations=_NamespacePath(['/tmp/x/a']))
https://docs.python.org/3/library/importlib.html#importlib.machinery.ModuleSpec.origin
> ... Normally “origin” should be set, but it may be None (the default) which indicates it is unspecified (e.g. for namespace packages).
above the `origin` is `'namespace'`
https://docs.python.org/3/library/importlib.html#importlib.machinery.ModuleSpec.submodule_search_locations
> List of strings for where to find submodules, if a package (None otherwise).
However the `_NamespacePath` object above is not indexable:
>>> x = importlib.util.find_spec('a').submodule_search_locations
>>> x[0]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: '_NamespacePath' object does not support indexing
I can work around however with:
>>> next(iter(x))
'/tmp/x/a'
======================
so I guess a few things can/should come out of this:
- Document the `'namespace'` origin
- Document that `submodule_search_paths` is a Sized[str] instead
- Add `__getitem__` to `_NamespacePath` such that it implements the full `Sized` protocol |
|
Date |
User |
Action |
Args |
2019-01-28 18:03:13 | Anthony Sottile | set | recipients:
+ Anthony Sottile, docs@python |
2019-01-28 18:03:10 | Anthony Sottile | set | messageid: <1548698590.94.0.426601552573.issue35843@roundup.psfhosted.org> |
2019-01-28 18:03:10 | Anthony Sottile | link | issue35843 messages |
2019-01-28 18:03:10 | Anthony Sottile | create | |
|