Django - 'helpers' is not a valid tag library

Question

When following the Custom template tag & filters tutorial, I get this error:

'helpers' is not a valid tag library: Template library helpers not found, tried django.templatetags.helpers,django.contrib.staticfiles.templatetags.helpers,django.contrib.admin.templatetags.helpers

I saw a lot of questions about this same issue, but none of the following actions solved it.

Folder structure:

container/
  module/
    templatetags/
      __init__.py
      helpers.py
    templates/
      ...
    ... (views, models, ...)
  system/
    ... (urls, settings, ...)

In system/settings.py, the module is included:

INSTALLED_APPS = (
    ...
    'module',
)

My helper source doesn't trigger any syntax or import error from the django shell:

from django import template
register = template.Library()

@register.filter
def myhelper(value):
    return value

Finally, the template that calls myhelper is simply:

{% load helpers %}
{{ "hello"|myhelper }}

Why doesn't it work ?

Answer 1

Thanks to the sergzach's idea, I was able to make my filter work by renaming its file from helpers.py to somethingelse.py.

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Edit

Django has its own helpers for generating the admin page. That would be the cause of the naming conflicts.