启动服务器时Django中的_DeadlockError [英] _DeadlockError in Django while starting server
本文介绍了启动服务器时Django中的_DeadlockError的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
很多次,我在启动python服务器时遇到此错误.当我更改任何文件并且服务器再次启动时,也会发生这种情况.
A lot many times I encounter this error while starting python server. This also happens when I change any file and server boots up again.
我尝试删除环境并重新创建环境,但是仍然存在相同的错误.
I've tried deleting the environment and re-creating the environment but still the same error persists.
Python 3.5.2(默认值,2018年11月12日,13:43:14)[GCC 5.4.0 20160609] onlinux
Python 3.5.2 (default, Nov 12 2018, 13:43:14) [GCC 5.4.0 20160609] on linux
Django:2.2.1
Django: 2.2.1
/home/satyam/Code/myproject/myproject_apps/invoice/services/excel_service.py changed, reloading.
Watching for file changes with StatReloader
Performing system checks...
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/home/satyam/Code/environments/ebapps/lib/python3.5/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/python3.5/threading.py", line 914, in _bootstrap_inner
self.run()
File "/usr/lib/python3.5/threading.py", line 862, in run
self._target(*self._args, **self._kwargs)
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run
self.check(display_num_errors=True)
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/core/management/base.py", line 390, in check
include_deployment_checks=include_deployment_checks,
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/core/management/base.py", line 377, in _run_checks
return checks.run_checks(**kwargs)
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/core/checks/registry.py", line 72, in run_checks
new_errors = check(app_configs=app_configs)
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/contrib/admin/checks.py", line 79, in check_dependencies
for engine in engines.all():
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/template/utils.py", line 90, in all
return [self[alias] for alias in self]
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/template/utils.py", line 90, in <listcomp>
return [self[alias] for alias in self]
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/template/utils.py", line 81, in __getitem__
engine = engine_cls(params)
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/template/backends/django.py", line 25, in __init__
options['libraries'] = self.get_templatetag_libraries(libraries)
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/template/backends/django.py", line 43, in get_templatetag_libraries
libraries = get_installed_libraries()
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/template/backends/django.py", line 108, in get_installed_libraries
for name in get_package_libraries(pkg):
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/template/backends/django.py", line 121, in get_package_libraries
module = import_module(entry[1])
File "/home/satyam/Code/environments/ebapps/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 665, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/rest_framework/templatetags/rest_framework.py", line 15, in <module>
from rest_framework.renderers import HTMLFormRenderer
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/rest_framework/renderers.py", line 20, in <module>
from django.test.client import encode_multipart
File "/home/satyam/Code/environments/ebapps/lib/python3.5/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 168, in __enter__
File "<frozen importlib._bootstrap>", line 110, in acquire
_frozen_importlib._DeadlockError: deadlock detected by _ModuleLock('django.test.signals') at 140078699689688
推荐答案
这次导入对我造成了什么错误:
What was causing the error for me was this import:
from rest_framework.urlpatterns import format_suffix_patterns
删除它可以立即解决问题.
removing it solved immediately the issue.
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