Hello there DRF group!
I've following along the Django Rest Framework detailed tutorial to
understand the framework in depth. However, while doing so, I keep
encountering a DeadlockError which is as follows:
Watching for file changes with StatReloader
Performing system checks...
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/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/local/Cellar/python/3.7.1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py",
line 917, in _bootstrap_inner
self.run()
File
"/usr/local/Cellar/python/3.7.1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py",
line 865, in run
self._target(*self._args, **self._kwargs)
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/utils/autoreload.py",
line 54, in wrapper
fn(*args, **kwargs)
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/core/management/commands/runserver.py",
line 117, in inner_run
self.check(display_num_errors=True)
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/core/management/base.py",
line 390, in check
include_deployment_checks=include_deployment_checks,
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/core/management/base.py",
line 377, in _run_checks
return checks.run_checks(**kwargs)
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/core/checks/registry.py",
line 72, in run_checks
new_errors = check(app_configs=app_configs)
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/contrib/admin/checks.py",
line 79, in check_dependencies
for engine in engines.all():
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/template/utils.py",
line 90, in all
return [self[alias] for alias in self]
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/template/utils.py",
line 90, in <listcomp>
return [self[alias] for alias in self]
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/template/utils.py",
line 81, in __getitem__
engine = engine_cls(params)
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/template/backends/django.py",
line 25, in __init__
options['libraries'] = self.get_templatetag_libraries(libraries)
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/template/backends/django.py",
line 43, in get_templatetag_libraries
libraries = get_installed_libraries()
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/template/backends/django.py",
line 108, in get_installed_libraries
for name in get_package_libraries(pkg):
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/template/backends/django.py",
line 121, in get_package_libraries
module = import_module(entry[1])
File
"/usr/local/Cellar/python/3.7.1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/importlib/__init__.py",
line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in
_call_with_frames_removed
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/rest_framework/templatetags/rest_framework.py",
line 12, in <module>
from rest_framework.renderers import HTMLFormRenderer
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/rest_framework/renderers.py",
line 19, in <module>
from django.test.client import encode_multipart
File "/Users/raunaq/Code/Learning/Python/Django/Tutorials/Django Rest
Framework/drf/env/lib/python3.7/site-packages/django/test/client.py", line
23, in <module>
from django.test import signals
File "<frozen importlib._bootstrap>", line 980, 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 4553097512
I encounter this error randomly when I change files or even if I just turn
of and run server again without any changes whatsoever. This is quite
annoying and is something that I would like to avoid when using DRF in
production. Any tips would be welcome!
Thanks in advance.
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