[Django] #30352: Error al ejecutar python manage.py sin sealizar cambios

Django

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Apr 11, 2019, 3:58:01 PM4/11/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody
Type: | Status: new
Cleanup/optimization |
Component: Core | Version: 2.2
(System checks) |
Severity: Normal | Keywords: Reload Django
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
El error se puede generar presionando "Ctrl + S" para recargar Django y no
es necesario realizar algún cambio en el código para obtener el error que
parece ser aleatorio. Por lo pronto lo solucioné regresando a Django 2.1.4

Algunas veces funciona bien e informa lo siguiente:

{{{
System check identified no issues (0 silenced).
April 11, 2019 - 19:29:25
Django version 2.1.4, using settings 'base.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
}}}

En ocasiones pasa lo siguiente y es muy repetitivo:

{{{
/home/irvin/Documentos/Proyectos/REST-env/base/snippets/views.py changed,
reloading.
Watching for file changes with StatReloader
Performing system checks...

Exception in thread Thread-1:
Traceback (most recent call last):
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/template/utils.py", line 66, in __getitem__
return self._engines[alias]
KeyError: 'django'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/usr/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/core/management/commands/runserver.py", line 117, in
inner_run
self.check(display_num_errors=True)
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/core/management/base.py", line 390, in check
include_deployment_checks=include_deployment_checks,
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/core/management/base.py", line 377, in _run_checks
return checks.run_checks(**kwargs)
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/core/checks/registry.py", line 72, in run_checks
new_errors = check(app_configs=app_configs)
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/contrib/admin/checks.py", line 80, in check_dependencies
for engine in engines.all():
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/template/utils.py", line 90, in all
return [self[alias] for alias in self]
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/template/utils.py", line 90, in <listcomp>
return [self[alias] for alias in self]
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/template/utils.py", line 81, in __getitem__
engine = engine_cls(params)
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/template/backends/django.py", line 25, in __init__
options['libraries'] = self.get_templatetag_libraries(libraries)
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/template/backends/django.py", line 43, in
get_templatetag_libraries
libraries = get_installed_libraries()
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/template/backends/django.py", line 108, in
get_installed_libraries
for name in get_package_libraries(pkg):
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/template/backends/django.py", line 121, in
get_package_libraries
module = import_module(entry[1])
File "/home/irvin/Documentos/Proyectos/REST-
env/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in
_find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in
_call_with_frames_removed
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/rest_framework/templatetags/rest_framework.py", line 15, in
<module>
from rest_framework.renderers import HTMLFormRenderer
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/rest_framework/renderers.py", line 20, in <module>
from django.test.client import encode_multipart
File "/home/irvin/Documentos/Proyectos/REST-env/lib/python3.6/site-
packages/django/test/client.py", line 23, in <module>
from django.test import signals
File "<frozen importlib._bootstrap>", line 968, in _find_and_load
File "<frozen importlib._bootstrap>", line 149, in __enter__
File "<frozen importlib._bootstrap>", line 94, in acquire
_frozen_importlib._DeadlockError: deadlock detected by
_ModuleLock('django.test.signals') at 140476939476608
}}}

SO Ubuntu 18
Componentes instalados:

Python 3.6.7
Django 2.2
django-crispy-forms 1.7.2
django-environ 0.4.5
django-filter 2.1.0
django-smart-selects 1.5.4
django-tables2 2.0.6
django-widget-tweaks 1.4.3
djangorestframework 3.9.2
Markdown 3.1
numpy 1.16.2
pip 19.0.3
pkg-resources 0.0.0
psycopg2-binary 2.8.1
Pygments 2.3.1
pytz 2019.1
setuptools 41.0.0
sqlparse 0.3.0
table 0.0.4
wheel 0.33.1

--
Ticket URL: <https://code.djangoproject.com/ticket/30352>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.

Django

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Apr 16, 2019, 4:59:23 AM4/16/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by felixxm):

* status: new => closed
* resolution: => worksforme

Comment:

Thanks for the report, however I cannot reproduce this issue. You should
take into account that not all 3rd party packages that you mentioned in a
ticket description support Django 2.2, e.g. `django-environ`.

Please use one of
[https://code.djangoproject.com/wiki/TicketClosingReasons/UseSupportChannels
support channels].

--
Ticket URL: <https://code.djangoproject.com/ticket/30352#comment:1>

Django

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Apr 16, 2019, 5:34:58 PM4/16/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody
Type: | Status: new
Cleanup/optimization |

Component: Core (System | Version: 2.2
checks) |
Severity: Normal | Resolution:

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by Scott Talbert):

* status: closed => new
* resolution: worksforme =>

Comment:

I'm seeing the same issue apparently (although I don't understand Spanish
well):

{{{

Watching for file changes with StatReloader
Performing system checks...

Exception in thread Thread-1:
Traceback (most recent call last):

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/template/utils.py", line 66, in __getitem__
return self._engines[alias]
KeyError: 'django'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/usr/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/core/management/commands/runserver.py", line 117, in
inner_run
self.check(display_num_errors=True)

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/core/management/base.py", line 390, in check
include_deployment_checks=include_deployment_checks,

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/core/management/base.py", line 377, in _run_checks
return checks.run_checks(**kwargs)

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/core/checks/registry.py", line 72, in run_checks
new_errors = check(app_configs=app_configs)

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/contrib/admin/checks.py", line 80, in check_dependencies
for engine in engines.all():

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/template/utils.py", line 90, in all
return [self[alias] for alias in self]

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/template/utils.py", line 90, in <listcomp>
return [self[alias] for alias in self]

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/template/utils.py", line 81, in __getitem__
engine = engine_cls(params)

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/template/backends/django.py", line 25, in __init__
options['libraries'] = self.get_templatetag_libraries(libraries)

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/template/backends/django.py", line 43, in
get_templatetag_libraries
libraries = get_installed_libraries()

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/template/backends/django.py", line 108, in
get_installed_libraries
for name in get_package_libraries(pkg):

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/template/backends/django.py", line 121, in
get_package_libraries
module = import_module(entry[1])

File "/usr/lib/python3.6/importlib/__init__.py", line 126, in

import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in
_find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in
_call_with_frames_removed

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/rest_framework/templatetags/rest_framework.py", line 15, in
<module>
from rest_framework.renderers import HTMLFormRenderer

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/rest_framework/renderers.py", line 20, in <module>
from django.test.client import encode_multipart

File "<home_dir>/rest_api/env/lib/python3.6/site-

packages/django/test/client.py", line 23, in <module>
from django.test import signals
File "<frozen importlib._bootstrap>", line 968, in _find_and_load
File "<frozen importlib._bootstrap>", line 149, in __enter__
File "<frozen importlib._bootstrap>", line 94, in acquire
_frozen_importlib._DeadlockError: deadlock detected by

_ModuleLock('django.test.signals') at 140466248423072
}}}

My packages list is a bit shorter:
{{{
certifi==2019.3.9
chardet==3.0.4
colorama==0.4.1
Django==2.2
djangorestframework==3.9.2
future==0.17.1
h2o==3.22.1.5
idna==2.8
numpy==1.16.2
pandas==0.24.2
pkg-resources==0.0.0
python-dateutil==2.8.0
pytz==2018.9
requests==2.21.0
six==1.12.0
sqlparse==0.3.0
tabulate==0.8.3
urllib3==1.24.1
}}}

--
Ticket URL: <https://code.djangoproject.com/ticket/30352#comment:2>

Django

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Apr 17, 2019, 12:57:06 AM4/17/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody
Type: | Status: new
Cleanup/optimization |

Component: Core (System | Version: 2.2
checks) |
Severity: Normal | Resolution:

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Comment (by felixxm):

Everything works for me :| Can you provide test project to reproduce this
issue?

--
Ticket URL: <https://code.djangoproject.com/ticket/30352#comment:3>

Django

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Apr 17, 2019, 6:37:59 AM4/17/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody

Type: | Status: closed

Cleanup/optimization |
Component: Core (System | Version: 2.2
checks) |

Severity: Normal | Resolution: needsinfo

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by felixxm):

* status: new => closed

* resolution: => needsinfo

--
Ticket URL: <https://code.djangoproject.com/ticket/30352#comment:4>

Django

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Apr 18, 2019, 10:56:55 AM4/18/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by Scott Talbert):

* cc: Scott Talbert (added)

Comment:

In my case, it seems that somehow one or more of the '.pyc' files in my
venv had gotten corrupted somehow. I deleted all the '.pyc' files in my
venv and now I can no longer reproduce the problem.

--
Ticket URL: <https://code.djangoproject.com/ticket/30352#comment:5>

Django

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May 24, 2019, 10:36:48 PM5/24/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody
Type: | Status: new
Cleanup/optimization |

Component: Core (System | Version: 2.2
checks) |
Severity: Normal | Resolution:

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by vankhoa011):

* status: closed => new

* resolution: needsinfo =>

Comment:

I got the same issue. I tried to delete all .pyc. However, the problem
still exists.

I'm not sure what the problem is.

OS: OSX
Python: Python 3.7.1

Django==2.2.1
djangorestframework==3.9.4
Pygments==2.4.1
pytz==2019.1
sqlparse==0.3.0

--
Ticket URL: <https://code.djangoproject.com/ticket/30352#comment:6>

Django

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May 27, 2019, 1:51:06 AM5/27/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody

Type: | Status: closed

Cleanup/optimization |
Component: Core (System | Version: 2.2
checks) |

Severity: Normal | Resolution: needsinfo

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by felixxm):

* status: new => closed
* resolution: => needsinfo

Comment:

Please [https://docs.djangoproject.com/en/stable/internals/contributing
/triaging-tickets/#closing-tickets follow triaging guidelines with regards
to needsinfo tickets.] To reopen this ticket you should provide a test
project.

--
Ticket URL: <https://code.djangoproject.com/ticket/30352#comment:7>

Django

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May 30, 2019, 10:53:13 AM5/30/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by alexkiro):

* cc: alexkiro (added)

--
Ticket URL: <https://code.djangoproject.com/ticket/30352#comment:8>

Django

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May 30, 2019, 3:38:52 PM5/30/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by Akos Ladanyi):

* cc: Akos Ladanyi (added)

--
Ticket URL: <https://code.djangoproject.com/ticket/30352#comment:9>

Django

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Aug 14, 2019, 11:39:42 PM8/14/19

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#30352: Error al ejecutar python manage.py sin sealizar cambios
-------------------------------------+-------------------------------------
Reporter: irv-ro-j | Owner: nobody
Type: | Status: new
Cleanup/optimization |

Component: Core (System | Version: 2.2
checks) |
Severity: Normal | Resolution:

Keywords: Reload Django | Triage Stage:

| Unreviewed
Has patch: 0 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by tengqm):

* status: closed => new
* resolution: needsinfo =>

Comment:

There is no resolution for this issue yet. The issue is still there and
cannot be easily reproduced.

[INFO] 2019-08-15 09:43:46,548 django.utils.autoreload (autoreload.py:597)
- Watching for file changes with StatReloader
Performing system checks...
Exception in thread django-main-thread:

Traceback (most recent call last):

File "/home/travis/virtualenv/python3.6.7/lib/python3.6/site-

packages/django/template/utils.py", line 66, in __getitem__
return self._engines[alias]
KeyError: 'django'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):

File "/opt/python/3.6.7/lib/python3.6/threading.py", line 916, in
_bootstrap_inner
self.run()
File "/opt/python/3.6.7/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/home/travis/virtualenv/python3.6.7/lib/python3.6/site-