Expected Behavior
PackageLoader should continue to load from a namespace package even under pytest.
Actual Behavior
Starting with jinja2 2.11, the tests for pmxbot have started failing. They fail when pytest attempts to rewrite the modules for running under test and in doing so, cause the jinja2.loaders.PackageLoader not to recognize the 'pmxbot.web' package. Note that pmxbot is a setuptools namespace package.
Full Traceback
pmxbot/web/__main__.py:1: in <module>
import pmxbot.web.viewer
<frozen importlib._bootstrap>:991: in _find_and_load
???
<frozen importlib._bootstrap>:975: in _find_and_load_unlocked
???
<frozen importlib._bootstrap>:671: in _load_unlocked
???
.tox/python/lib/python3.8/site-packages/_pytest/assertion/rewrite.py:143: in exec_module
exec(co, module.__dict__)
pmxbot/web/viewer.py:24: in <module>
jenv = jinja2.Environment(loader=jinja2.loaders.PackageLoader('pmxbot.web'))
.tox/python/lib/python3.8/site-packages/jinja2/loaders.py:288: in __init__
raise ValueError(
E ValueError: The 'pmxbot.web' package was not installed in a way that PackageLoader understands.The error is not triggered when simply importing the package naturally; it only seems to happen during the pytest rewrite.
Your Environment
- Python version: 3.8.1
- Jinja version: 2.11.x
Downgrading to Jinja 2.10.3 works around the failure. I suspect #970 is implicated.
Expected Behavior
PackageLoader should continue to load from a namespace package even under pytest.
Actual Behavior
Starting with jinja2 2.11, the tests for pmxbot have started failing. They fail when pytest attempts to rewrite the modules for running under test and in doing so, cause the
jinja2.loaders.PackageLoadernot to recognize the 'pmxbot.web' package. Note thatpmxbotis a setuptools namespace package.Full Traceback
pmxbot/web/__main__.py:1: in <module> import pmxbot.web.viewer <frozen importlib._bootstrap>:991: in _find_and_load ??? <frozen importlib._bootstrap>:975: in _find_and_load_unlocked ??? <frozen importlib._bootstrap>:671: in _load_unlocked ??? .tox/python/lib/python3.8/site-packages/_pytest/assertion/rewrite.py:143: in exec_module exec(co, module.__dict__) pmxbot/web/viewer.py:24: in <module> jenv = jinja2.Environment(loader=jinja2.loaders.PackageLoader('pmxbot.web')) .tox/python/lib/python3.8/site-packages/jinja2/loaders.py:288: in __init__ raise ValueError( E ValueError: The 'pmxbot.web' package was not installed in a way that PackageLoader understands.The error is not triggered when simply importing the package naturally; it only seems to happen during the pytest rewrite.
Your Environment
Downgrading to Jinja 2.10.3 works around the failure. I suspect #970 is implicated.