Can't add a new object - RuntimeError: 'path' must be None or a list, not <class '_frozen_importlib_external._NamespacePath'>

[tunarob]

I get this:

  File "/app/apps/posts/forms.py", line 19, in save
    instance.save()
  File "/usr/local/lib/python3.5/site-packages/django/db/models/base.py", line 806, in save
    force_update=force_update, update_fields=update_fields)
  File "/usr/local/lib/python3.5/site-packages/django/db/models/base.py", line 831, in save_base
    update_fields=update_fields,
  File "/usr/local/lib/python3.5/site-packages/django/dispatch/dispatcher.py", line 193, in send
    for receiver in self._live_receivers(sender)
  File "/usr/local/lib/python3.5/site-packages/django/dispatch/dispatcher.py", line 193, in <listcomp>
    for receiver in self._live_receivers(sender)
  File "/usr/local/lib/python3.5/site-packages/precise_bbcode/fields.py", line 136, in process_bbcodes
    parser = get_parser()
  File "/usr/local/lib/python3.5/site-packages/precise_bbcode/bbcode/__init__.py", line 23, in get_parser
    loader.load_parser()
  File "/usr/local/lib/python3.5/site-packages/precise_bbcode/bbcode/__init__.py", line 42, in load_parser
    self.init_bbcode_placeholders()
  File "/usr/local/lib/python3.5/site-packages/precise_bbcode/bbcode/__init__.py", line 75, in init_bbcode_placeholders
    placeholders = placeholder_pool.get_placeholders()
  File "/usr/local/lib/python3.5/site-packages/precise_bbcode/placeholder_pool.py", line 73, in get_placeholders
    self.discover_placeholders()
  File "/usr/local/lib/python3.5/site-packages/precise_bbcode/placeholder_pool.py", line 33, in discover_placeholders
    load('bbcode_placeholders')
  File "/usr/local/lib/python3.5/site-packages/precise_bbcode/core/loading.py", line 37, in load
    get_module(app, modname)
  File "/usr/local/lib/python3.5/site-packages/precise_bbcode/core/loading.py", line 23, in get_module
    imp.find_module(modname, app_path)
  File "/usr/local/lib/python3.5/imp.py", line 270, in find_module
    "not {}".format(type(path)))
RuntimeError: 'path' must be None or a list, not <class '_frozen_importlib_external._NamespacePath'>

I use Python 3.5 and Django 1.11. I followed the docs (nothing complicated):

content = BBCodeTextField(verbose_name='content')

But in my tests when I send a POST:

post_data = {
    'title': 'Test title with ł',
    'categories': [category.pk for category in categories],
    'tags': tags,
    'content': 'Hello world!',
}

response = self.client.post(self.url, post_data)

I get above error. The only custom thing is in my form:

def save(self, commit=True):
    instance = super().save(commit=False)
    instance.slug = slugify(instance.title, only_ascii=True)
    instance.status = Post.STATUS_CHOICES[0][0]

    if commit:
        instance.save()
        self.save_m2m()
    return instance

Any idea what that can be?

[tunarob]

I found it fails on this (in ipdb):

ipdb> from precise_bbcode.bbcode import get_parser
ipdb> parser = get_parser()
*** RuntimeError: 'path' must be None or a list, not <class '_frozen_importlib_external._NamespacePath'>

[tunarob]

I'm able to reproduce that error. The reason why it fails is that 1 of my apps didn't have __init__.py file but was included in INSTALLED_APPS.

What is the desired behaviour? Should That skip (try: except:) invalid apps or fail?
I could create a PR with the "skipping" part if this is how it should be.

[ellmetha]

Well, if I understand correctly, the main problem seems to be that one of your apps didn't have an __init__.py file. But it should have one, right? In that case, I don't see why there should be a special case implemented in django-precise-bbcode. 😉