Traceback (most recent call last):
File "/home/florian/tmp/flask/app.py", line 3, in <module>
app = Flask(__name__)
^^^^^^^^^^^^^^^
File "/home/florian/tmp/flask/src/flask/app.py", line 376, in __init__
instance_path = self.auto_find_instance_path()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/florian/tmp/flask/src/flask/app.py", line 630, in auto_find_instance_path
prefix, package_path = find_package(self.import_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/florian/tmp/flask/src/flask/scaffold.py", line 898, in find_package
package_path = _find_package_path(import_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/florian/tmp/flask/src/flask/scaffold.py", line 858, in _find_package_path
spec = importlib.util.find_spec(root_mod_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib.util>", line 114, in find_spec
ValueError: __main__.__spec__ is None
With a trivial script using
app.run()such as:The current git
mainbreaks with:This seems to be a regression due to 84e11a1 from #5157.
Environment: