Develop Reference

Apple M1 run Django display symbol not found in flat namespace '_PQbackendPID'

I am use django to build the project, when I run python manage.py makemigrations it get the error message:
Traceback (most recent call last):
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/db/backends/postgresql/base.py", line 24, in <module>
import psycopg2 as Database
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/psycopg2/__init__.py", line 51, in <module>
from psycopg2._psycopg import ( # noqa
ImportError: dlopen(/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/psycopg2/_psycopg.cpython-310-darwin.so, 0x0002): symbol not found in flat namespace '_PQbackendPID'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Users/mingzhe/Desktop/webapp/electric/electric/manage.py", line 22, in <module>
main()
File "/Users/mingzhe/Desktop/webapp/electric/electric/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/core/management/__init__.py", line 446, in execute_from_command_line
utility.execute()
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/core/management/__init__.py", line 420, in execute
django.setup()
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/apps/registry.py", line 116, in populate
app_config.import_models()
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/apps/config.py", line 269, in import_models
self.models_module = import_module(models_module_name)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 883, in exec_module
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/contrib/auth/models.py", line 3, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/contrib/auth/base_user.py", line 49, in <module>
class AbstractBaseUser(models.Model):
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/db/models/base.py", line 141, in __new__
new_class.add_to_class("_meta", Options(meta, app_label))
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/db/models/base.py", line 369, in add_to_class
value.contribute_to_class(cls, name)
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/db/models/options.py", line 231, in contribute_to_class
self.db_table, connection.ops.max_name_length()
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/utils/connection.py", line 15, in __getattr__
return getattr(self._connections[self._alias], item)
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/utils/connection.py", line 62, in __getitem__
conn = self.create_connection(alias)
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/db/utils.py", line 193, in create_connection
backend = load_backend(db["ENGINE"])
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/db/utils.py", line 113, in load_backend
return import_module("%s.base" % backend_name)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/django/db/backends/postgresql/base.py", line 28, in <module>
raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: dlopen(/Users/mingzhe/Desktop/webapp/electric/env/lib/python3.10/site-packages/psycopg2/_psycopg.cpython-310-darwin.so, 0x0002): symbol not found in flat namespace '_PQbackendPID'
I already create virtualenv here is my step:
$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
$ brew update
$ brew install postgresql
$ brew services start postgresql
$ virtualenv env
$ source env/bin/activate
(env) $ pip install django psycopg2-binary
I has been used most people's solution: install psycopg2-binary not psycopg2 but still get symbol not found in flat namespace '_PQbackendPID'
My system environment：
macOS Monterey
Python3.10.7 64bit
asgiref==3.5.2
Django==4.1.1
psycopg2-binary==2.9.3
sqlparse==0.4.2
I has try to brew uninstall postgresql and install again it still have same issue, I'm afraid I'm doing something wrong or maybe I don't get how it work on Macbook M1.
Any help or explanation is welcome! Thank you.

try this
pip3 install psycopg2-binary --no-cache-dir

pip uninstall psycopg2
pip install psycopg2-binary --no-cache-dir

Unable to setup mysql with Django on Mac

I installed the recent version of MySQL for my mac (macOS 12(ARM, 64-bit), DMG Archive) and created a database called storefront. I'm working in a pipenv virtual environment and install mysqlclient. I've also updated my DATABASES settings to point to my new database in my settings.py file.
DB Settings. But whenever I try to run the server I get an error. NameError: name '_mysql' is not defined Also at the top, (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e') I thought by installing the ARM version I wouldn't deal with this error. I wonder if it's pointing to the wrong file within my env despite adding the PATH to my .zshrc info. Is there a special way to point to the correct mysql or am I setting things up incorrectly? Here's my error message "
Traceback (most recent call last):
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/MySQLdb/__init__.py", line 18, in <module>
from . import _mysql
ImportError: dlopen(/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/MySQLdb/_mysql.cpython-39-darwin.so, 0x0002): tried: '/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/MySQLdb/_mysql.cpython-39-darwin.so' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Users/a0c08w6/Documents/Scripts/Django/storefront/manage.py", line 22, in <module>
main()
File "/Users/a0c08w6/Documents/Scripts/Django/storefront/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/core/management/__init__.py", line 446, in execute_from_command_line
utility.execute()
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/core/management/__init__.py", line 420, in execute
django.setup()
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/apps/registry.py", line 116, in populate
app_config.import_models()
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/apps/config.py", line 304, in import_models
self.models_module = import_module(models_module_name)
File "/opt/homebrew/Cellar/python#3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 850, in exec_module
File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/contrib/auth/models.py", line 3, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/contrib/auth/base_user.py", line 49, in <module>
class AbstractBaseUser(models.Model):
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/db/models/base.py", line 141, in __new__
new_class.add_to_class("_meta", Options(meta, app_label))
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/db/models/base.py", line 369, in add_to_class
value.contribute_to_class(cls, name)
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/db/models/options.py", line 235, in contribute_to_class
self.db_table, connection.ops.max_name_length()
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/utils/connection.py", line 15, in __getattr__
return getattr(self._connections[self._alias], item)
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/utils/connection.py", line 62, in __getitem__
conn = self.create_connection(alias)
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/db/utils.py", line 208, in create_connection
backend = load_backend(db["ENGINE"])
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/db/utils.py", line 113, in load_backend
return import_module("%s.base" % backend_name)
File "/opt/homebrew/Cellar/python#3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/django/db/backends/mysql/base.py", line 15, in <module>
import MySQLdb as Database
File "/Users/a0c08w6/.local/share/virtualenvs/storefront-A2x2yZd3/lib/python3.9/site-packages/MySQLdb/__init__.py", line 24, in <module>
version_info, _mysql.version_info, _mysql.__file__
NameError: name '_mysql' is not defined

Error tell you, you have mysql macOs build for x86_64, but you should set up build for 'arm64e'.
here you can find both version for macOs:
https://dev.mysql.com/downloads/mysql/
I install mySql many times on macos... and now i have mariaDb
https://mariadb.com/kb/en/installing-mariadb-on-macos-using-homebrew/
For me it was easier to install

Problems with mysqlclient in python virtualenv on OSX

I'm trying to make a Django application that uses mysql as database engine. I have followed a tutorial where it says I have to download pymysql packages using pip. I used the next command pip install pymysql. Unitl here all working. The next step is to make migrations in the django project, but when I try to do it, it throws me the next error:
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/core/management/__init__.py", line 357, in execute
django.setup()
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/apps/registry.py", line 114, in populate
app_config.import_models()
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/apps/config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/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/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/contrib/auth/base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/db/models/base.py", line 117, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/db/models/base.py", line 321, in add_to_class
value.contribute_to_class(cls, name)
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/db/models/options.py", line 204, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/db/__init__.py", line 28, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/db/utils.py", line 201, in __getitem__
backend = load_backend(db['ENGINE'])
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/db/utils.py", line 110, in load_backend
return import_module('%s.base' % backend_name)
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/Users/paulmirve/anaconda3/envs/myDjangoEnv/lib/python3.7/site-packages/django/db/backends/mysql/base.py", line 36, in <module>
raise ImproperlyConfigured('mysqlclient 1.3.13 or newer is required; you have %s.' % Database.__version__)
django.core.exceptions.ImproperlyConfigured: mysqlclient 1.3.13 or newer is required; you have 0.9.3.
It says my mysqlclient is in a older version, and I need to upgrade it, but when I try to install mysqlclient using pip install mysqlclient it throws me the next error:
Collecting mysqlclient
Using cached https://files.pythonhosted.org/packages/f4/f1/3bb6f64ca7a429729413e6556b7ba5976df06019a5245a43d36032f1061e/mysqlclient-1.4.2.post1.tar.gz
ERROR: Complete output from command python setup.py egg_info:
ERROR: /bin/sh: mysql_config: command not found
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/private/var/folders/8y/f31pp_9n7qvc6649ltx1fzsw0000gn/T/pip-install-94slmbbk/mysqlclient/setup.py", line 16, in <module>
metadata, options = get_config()
File "/private/var/folders/8y/f31pp_9n7qvc6649ltx1fzsw0000gn/T/pip-install-94slmbbk/mysqlclient/setup_posix.py", line 51, in get_config
libs = mysql_config("libs")
File "/private/var/folders/8y/f31pp_9n7qvc6649ltx1fzsw0000gn/T/pip-install-94slmbbk/mysqlclient/setup_posix.py", line 29, in mysql_config
raise EnvironmentError("%s not found" % (_mysql_config_path,))
OSError: mysql_config not found
----------------------------------------
ERROR: Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/8y/f31pp_9n7qvc6649ltx1fzsw0000gn/T/pip-install-94slmbbk/mysqlclient/
I have tryied using pip install --update mysqlclient but doesn't work either. How can I solve this? I'm using python 3.7.3 and using MacOS Mojave.

How to start server with "python manage.py runserver" whithout errors?

I installed Django with: conda create --name myproject django
Every check I made (environement, django, versions, etc) seems to be alright and I don't know what the problem is.
What I have:
(myproject) D:\###Work###\###INFORMATICA###\###PYTHON###\MySite>python -V
Python 3.7.3
(myproject) D:\###Work###\###INFORMATICA###\###PYTHON###\MySite>conda -V
conda 4.6.14
(myproject) D:\###Work###\###INFORMATICA###\###PYTHON###\MySite>conda
list
packages in environment at C:\ProgramData\Anaconda3\envs\myproject:
Name Version Build Channel
astroid 2.2.5 py37_0
ca-certificates 2019.1.23 0
certifi 2019.3.9 py37_0
colorama 0.4.1 py37_0
django 2.2 py37_0
isort 4.3.17 py37_0
lazy-object-proxy 1.3.1 py37hfa6e2cd_2
mccabe 0.6.1 py37_1
openssl 1.1.1b he774522_1
pip 19.1 py37_0
pylint 2.3.1 py37_0
python 3.7.3 h8c8aaf0_1
pytz 2019.1 py_0
setuptools 41.0.1 py37_0
six 1.12.0 py37_0
sqlite 3.28.0 he774522_0
vc 14.1 h0510ff6_4
vs2015_runtime 14.15.26706 h3a45250_4
wheel 0.33.1 py37_0
wincertstore 0.2 py37_0
wrapt 1.11.1 py37he774522_0
(myproject) D:\###Work###\###INFORMATICA###\###PYTHON###\MySite> conda
info --envs
conda environments:
base C:\ProgramData\Anaconda3
myproject * C:\ProgramData\Anaconda3\envs\myproject
'# Application definition
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
]
And this is the output for : python manage.py runserver
(tried to add an IP and port but still no solution)
(myproject) D:\###Work###\###INFORMATICA###\###PYTHON###\MySite>python manage.py runserver
Watching for file changes with StatReloader Exception in thread Thread-1: Traceback (most recent call last): File "C:\ProgramData\Anaconda3\envs\myproject\lib\threading.py", line 917, in _bootstrap_inner
self.run() File "C:\ProgramData\Anaconda3\envs\myproject\lib\threading.py", line 865, in run
self._target(*self._args, **self._kwargs) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\utils\autoreload.py", line 54, in wrapper
fn(*args, **kwargs) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\core\management\commands\runserver.py", line 109, in inner_run
autoreload.raise_last_exception() File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\utils\autoreload.py", line 77, in raise_last_exception
raise _exception[0](_exception[1]).with_traceback(_exception[2]) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\utils\autoreload.py", line 54, in wrapper
fn(*args, **kwargs) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\apps\registry.py", line 114, in populate
app_config.import_models() File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\apps\config.py", line 211, in import_models
self.models_module = import_module(models_module_name) File "C:\ProgramData\Anaconda3\envs\myproject\lib\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 "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\contrib\auth\models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\contrib\auth\base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model): File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\db\models\base.py", line 117, in __new__
new_class.add_to_class('_meta', Options(meta, app_label)) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\db\models\base.py", line 321, in add_to_class
value.contribute_to_class(cls, name) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\db\models\options.py", line 204, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length()) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\db\__init__.py", line 28, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\db\utils.py", line 201, in __getitem__
backend = load_backend(db['ENGINE']) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\db\utils.py", line 110, in load_backend
return import_module('%s.base' % backend_name) File "C:\ProgramData\Anaconda3\envs\myproject\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\db\backends\sqlite3\base.py", line 28, in <module>
from .introspection import DatabaseIntrospection # isort:skip File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\db\backends\sqlite3\introspection.py", line 4, in <module>
import sqlparse ModuleNotFoundError: No module named 'sqlparse' Traceback (most recent call last): File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\apps\registry.py", line 155, in get_app_config
return self.app_configs[app_label] KeyError: 'admin' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "manage.py", line 21, in <module>
main() File "manage.py", line 17, in main
execute_from_command_line(sys.argv) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line
utility.execute() File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\core\management\__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\core\management\base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\core\management\commands\runserver.py", line 60, in execute
super().execute(*args, **options) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\core\management\base.py", line 364, in execute
output = self.handle(*args, **options) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\core\management\commands\runserver.py", line 95, in handle
self.run(**options) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\core\management\commands\runserver.py", line 102, in run
autoreload.run_with_reloader(self.inner_run, **options) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\utils\autoreload.py", line 579, in run_with_reloader
start_django(reloader, main_func, *args, **kwargs) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\utils\autoreload.py", line 564, in start_django
reloader.run(django_main_thread) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\utils\autoreload.py", line 272, in run
get_resolver().urlconf_module File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\utils\functional.py", line 80, in __get__
res = instance.__dict__[self.name] = self.func(instance) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\urls\resolvers.py", line 564, in urlconf_module
return import_module(self.urlconf_name) File "C:\ProgramData\Anaconda3\envs\myproject\lib\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 "D:\###Work###\###INFORMATICA###\###PYTHON###\MySite\MySite\urls.py", line 20, in <module>
path('admin/', admin.site.urls), File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\utils\functional.py", line 256, in inner
self._setup() File "C:\ProgramData\Anaconda3\envs\myproject\lib\site-packages\django\contrib\admin\sites.py", line 529, in _setup
AdminSiteClass = import_string(apps.get_app_config('admin').default_site) File "C:\ProgramData\Anaconda3\envs\myproject\lib\site->packages\django\apps\registry.py", line 162, in get_app_config
raise LookupError(message) LookupError: No installed app with label 'admin'.
(myproject) D:\###Work###\###INFORMATICA###\###PYTHON###\MySite
What could be the solution to the problem?

I found out an answer.
It seems that conda package manager is not working properly on my windows 10 installation.The solution is to install with pip package manager.
With the virtual environement active the command is:
pip install django --force
Hope that no one will spend so much time, to figure out a verry simple solution.
Ceers!

Trouble with psycopg2 setting up django

I'm trying to set up a Django app using a postgresql server (to eventually use with GeoDjango for GIS). I'm on a mac running OSX 10.11 and am running python 3.5 in a virtualenv. I've gone through all the installtion of postgresql, pyscopg2 etc and am trying to run
python manage.py migrate
But when I do I get the following error.
Traceback (most recent call last):
File "/Users/me/.python3env/lib/python3.5/site-packages/django/db/backends/postgresql/base.py", line 20, in <module>
import psycopg2 as Database
File "/Users/me/.python3env/lib/python3.5/site-packages/psycopg2/__init__.py", line 50, in <module>
from psycopg2._psycopg import BINARY, NUMBER, STRING, DATETIME, ROWID
ImportError: dlopen(/Users/me/.python3env/lib/python3.5/site-packages/psycopg2/_psycopg.cpython-35m-darwin.so, 2): Library not loaded: libssl.1.0.0.dylib
Referenced from: /Users/me/.python3env/lib/python3.5/site-packages/psycopg2/_psycopg.cpython-35m-darwin.so
Reason: image not found
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/Users/me/.python3env/lib/python3.5/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
utility.execute()
File "/Users/me/.python3env/lib/python3.5/site-packages/django/core/management/__init__.py", line 341, in execute
django.setup()
File "/Users/me/.python3env/lib/python3.5/site-packages/django/__init__.py", line 27, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/me/.python3env/lib/python3.5/site-packages/django/apps/registry.py", line 108, in populate
app_config.import_models(all_models)
File "/Users/me/.python3env/lib/python3.5/site-packages/django/apps/config.py", line 199, in import_models
self.models_module = import_module(models_module_name)
File "/Users/me/.python3env/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 "/Users/me/.python3env/lib/python3.5/site-packages/django/contrib/auth/models.py", line 4, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/Users/me/.python3env/lib/python3.5/site-packages/django/contrib/auth/base_user.py", line 52, in <module>
class AbstractBaseUser(models.Model):
File "/Users/me/.python3env/lib/python3.5/site-packages/django/db/models/base.py", line 119, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/Users/me/.python3env/lib/python3.5/site-packages/django/db/models/base.py", line 316, in add_to_class
value.contribute_to_class(cls, name)
File "/Users/me/.python3env/lib/python3.5/site-packages/django/db/models/options.py", line 214, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/Users/me/.python3env/lib/python3.5/site-packages/django/db/__init__.py", line 33, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/Users/me/.python3env/lib/python3.5/site-packages/django/db/utils.py", line 211, in __getitem__
backend = load_backend(db['ENGINE'])
File "/Users/me/.python3env/lib/python3.5/site-packages/django/db/utils.py", line 115, in load_backend
return import_module('%s.base' % backend_name)
File "/Users/me/.python3env/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/Users/me/.python3env/lib/python3.5/site-packages/django/db/backends/postgresql/base.py", line 24, in <module>
raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: dlopen(/Users/me/.python3env/lib/python3.5/site-packages/psycopg2/_psycopg.cpython-35m-darwin.so, 2): Library not loaded: libssl.1.0.0.dylib
Referenced from: /Users/me/.python3env/lib/python3.5/site-packages/psycopg2/_psycopg.cpython-35m-darwin.so
Reason: image not found
I've found a couple of stackoverflow threads on this error but none of the solutions seem to help at all.
Any advice would be much appreciated!
Edit: brew doctor output
Warning: python is symlinked to python3
This will confuse build scripts and in general lead to subtle breakage.
Warning: "config" scripts exist outside your system or Homebrew directories.
`./configure` scripts often look for *-config scripts to determine if
software packages are installed, and what additional flags to use when
compiling and linking.
Having additional scripts in your path can confuse software installed via
Homebrew if the config script overrides a system or Homebrew provided
script of the same name. We found the following "config" scripts:
/Users/me/.python3env/bin/python-config
Warning: Python is installed at /Library/Frameworks/Python.framework
Homebrew only supports building against the System-provided Python or a
brewed Python. In particular, Pythons installed to /Library can interfere
with other software installs.