Develop Reference

ImportError: DLL load failed while importing _psycopg: The specified module could not be found

I have a django project that I am trying to connect with a postgres database. However when I try to run the command python manage.py makemigrations I get the following error:
(card_crate_venv) G:\Shared drives\Card Crate\Software Development\card_crate_admin\website>python manage.py makemigrations
Traceback (most recent call last):
File "G:\Shared drives\Card Crate\Software Development\card_crate_admin\website\manage.py", line 22, in <module>
main()
File "G:\Shared drives\Card Crate\Software Development\card_crate_admin\website\manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "G:\Shared drives\Card Crate\Software Development\card_crate_admin\card_crate_venv\lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_line
utility.execute()
File "G:\Shared drives\Card Crate\Software Development\card_crate_admin\card_crate_venv\lib\site-packages\django\core\management\__init__.py", line 377, in execute
django.setup()
File "G:\Shared drives\Card Crate\Software Development\card_crate_admin\card_crate_venv\lib\site-packages\django\__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "G:\Shared drives\Card Crate\Software Development\card_crate_admin\card_crate_venv\lib\site-packages\django\apps\registry.py", line 91, in populate
app_config = AppConfig.create(entry)
File "G:\Shared drives\Card Crate\Software Development\card_crate_admin\card_crate_venv\lib\site-packages\django\apps\config.py", line 90, in create
module = import_module(entry)
File "C:\Users\Ross Waston\AppData\Local\Programs\Python\Python39\lib\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 790, in exec_module
File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
File "G:\Shared drives\Card Crate\Software Development\card_crate_admin\card_crate_venv\lib\site-packages\psycopg2\__init__.py", line 51, in <module>
from psycopg2._psycopg import ( # noqa
ImportError: DLL load failed while importing _psycopg: The specified module could not be found.
settings.py:
INSTALLED_APPS = [
'psycopg2',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'dashboard.apps.DashboardConfig',
]
...
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'development',
'USER': 'superuser',
'PASSWORD': 'admin',
'HOST': '192.168.1.100',
'PORT': '5432',
}
}
packages:

I found that this does not work because I was using python 3.9 as a interpreter. In PyCharm, I created a new interpreter, setting the base interpreter as python 3.7 and reinstalled all my needed packages it worked as expected

Django deploy to Heroku No module named 'django_heroku'

I'm tryin to deploy to Heroku and before this error I was getting:
ModuleNotFoundError: No module named 'django-tables2'
Then I installed django-heroku via pip install django-heroku, followed the instructions on how to set it up.
I disabled the collect static for heroku pushed my master branch and everything is fine, but once I do:
heroku run python manage.py migrate
I get the:
ModuleNotFoundError: No module named 'django_heroku'
the complete traceback is this:
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 "/app/.heroku/python/lib/python3.7/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line utility.execute()
File "/app/.heroku/python/lib/python3.7/site-packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.7/site-packages/django/core/management/base.py", line 341, in run_from_argv
connections.close_all()
File "/app/.heroku/python/lib/python3.7/site-packages/django/db/utils.py", line 225, in close_all
for alias in self:
File "/app/.heroku/python/lib/python3.7/site-packages/django/db/utils.py", line 219, in __iter__
return iter(self.databases)
File "/app/.heroku/python/lib/python3.7/site-packages/django/utils/functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/app/.heroku/python/lib/python3.7/site-packages/django/db/utils.py", line 153, in databases
self._databases = settings.DATABASES
File "/app/.heroku/python/lib/python3.7/site-packages/django/conf/__init__.py", line 76, in __getattr__
self._setup(name)
File "/app/.heroku/python/lib/python3.7/site-packages/django/conf/__init__.py", line 63, in _setup
self._wrapped = Settings(settings_module)
File "/app/.heroku/python/lib/python3.7/site-packages/django/conf/__init__.py", line 142, in __init__
mod = importlib.import_module(self.SETTINGS_MODULE)
File "/app/.heroku/python/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 "/app/GPC/settings.py", line 14, in <module>
import django_heroku
ModuleNotFoundError: No module named 'django_heroku'
I have in my settings at the top:
import os
import django_heroku
and in the very bottom:
django_heroku.settings(locals())
in my requirements.txt I have django-heroku
The master branch is updated and I just can find how to fix this.

The problem was that it was not added to the module, it was needed to be added to the virtual env and then do the pip freeze, with that it was solved.

WinError 193 %1 is not a valid Win32 application: when deploying Django on Apache

I am on windows server 2012. I have built an API on Django rest-framework and I am trying to deploy it using WAMP and mod_wsgi. I have tested the API by running 'python manage.py runserver' and it's giving the expected output. The issue is when I am deploying it on WAMp using mod_wsgi
I am able to start WAMP service but when I try to reach 'localhost' it's giving me the following error:
below is the Traceback :
Environment:
Request Method: GET
Request URL: http://localhost:8089/
Django Version: 3.0.5
Python Version: 3.7.6
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'rest_framework',
'API']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback (most recent call last):
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\django\core\handlers\base.py", line 100, in _get_response
resolver_match = resolver.resolve(request.path_info)
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\django\urls\resolvers.py", line 544, in resolve
for pattern in self.url_patterns:
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\django\utils\functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\django\urls\resolvers.py", line 588, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\django\utils\functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\django\urls\resolvers.py", line 581, in urlconf_module
return import_module(self.urlconf_name)
File "c:\python376\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
<source code not available>
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
<source code not available>
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
<source code not available>
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
<source code not available>
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
<source code not available>
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
<source code not available>
File "C:/Users/Administrator/Envs/predenv/Predictor\Predictor\urls.py", line 18, in <module>
from API import views
File "C:/Users/Administrator/Envs/predenv/Predictor\API\views.py", line 2, in <module>
from API.apps import ApiConfig
File "C:/Users/Administrator/Envs/predenv/Predictor\API\apps.py", line 10, in <module>
class ApiConfig(AppConfig):
File "C:/Users/Administrator/Envs/predenv/Predictor\API\apps.py", line 13, in ApiConfig
new_customer_model = pickle.load(new_customer_model_pkl)
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\statsmodels\genmod\__init__.py", line 1, in <module>
from statsmodels.tools._testing import PytestTester
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\statsmodels\tools\__init__.py", line 1, in <module>
from .tools import add_constant, categorical
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\statsmodels\tools\tools.py", line 4, in <module>
import numpy as np
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\numpy\__init__.py", line 140, in <module>
from . import _distributor_init
File "C:\Users\Administrator\Envs\predenv\Lib\site-packages\numpy\_distributor_init.py", line 26, in <module>
WinDLL(os.path.abspath(filename))
File "c:\python376\lib\ctypes\__init__.py", line 364, in __init__
self._handle = _dlopen(self._name, mode)
Exception Type: OSError at /
Exception Value: [WinError 193] %1 is not a valid Win32 application

Why Django tries to use MySQL instead of sqlite3

My problem is this: When I try to do the migrations, it gives me the following error:
python3 manage.py makemigrations
Traceback (most recent call last):
File "/home/jenifer/.local/lib/python3.7/site-packages/django/db/backends/mysql/base.py", line 16, in <module>
import MySQLdb as Database
ModuleNotFoundError: No module named 'MySQLdb'
The above exception was the direct cause of the following exception:
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 "/home/jenifer/.local/lib/python3.7/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
utility.execute()
File "/home/jenifer/.local/lib/python3.7/site-packages/django/core/management/__init__.py", line 377, in execute
django.setup()
File "/home/jenifer/.local/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/jenifer/.local/lib/python3.7/site-packages/django/apps/registry.py", line 114, in populate
app_config.import_models()
File "/home/jenifer/.local/lib/python3.7/site-packages/django/apps/config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "/usr/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 "/home/jenifer/.local/lib/python3.7/site-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/home/jenifer/.local/lib/python3.7/site-packages/django/contrib/auth/base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "/home/jenifer/.local/lib/python3.7/site-packages/django/db/models/base.py", line 121, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/home/jenifer/.local/lib/python3.7/site-packages/django/db/models/base.py", line 325, in add_to_class
value.contribute_to_class(cls, name)
File "/home/jenifer/.local/lib/python3.7/site-packages/django/db/models/options.py", line 208, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/home/jenifer/.local/lib/python3.7/site-packages/django/db/__init__.py", line 28, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/home/jenifer/.local/lib/python3.7/site-packages/django/db/utils.py", line 207, in __getitem__
backend = load_backend(db['ENGINE'])
File "/home/jenifer/.local/lib/python3.7/site-packages/django/db/utils.py", line 111, in load_backend
return import_module('%s.base' % backend_name)
File "/usr/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/home/jenifer/.local/lib/python3.7/site-packages/django/db/backends/mysql/base.py", line 21, in <module>
) from err
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module.
Did you install mysqlclient?
Thing is, I've never told django to use MySQL, in fact, the settings.py states that it has to use SQLite:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'gestlote.db'),
}
}
I've alreay tried to reinstall django, upgrade it, pip3 install pysqlite, but nothing seems to work.
So please, help me

How do I reference my settings file from running my unit tests?

I'm using Django and Python 3.7. I have different database configurations per environment, so I wanted to create settings that only import the database config depending on the environment. I have this directory ...
mainpage_project/settings
and within it are these files. "base.py" contains settings that I wish to be included regardless of the environment taht is loaded ...
(venv) localhost:mainpage_project davea$ ls mainpage_project/settings
__pycache__ base.py dev.py prod.py test.py
I have this in my mainpage_project/settings/test.py file ...
from mainpage.base import *
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': 'testdatabase'
},
}
But when I go to run my test file, I get the error complaining that it cannot execute the first line of the import, "from mainpage.base import *" ...
(venv) localhost:mainpage_project davea$ cd /Users/davea/Documents/workspace/mainpage_project; source ./venv/bin/activate; python manage.py test
Traceback (most recent call last):
File "manage.py", line 21, in <module>
execute_from_command_line(sys.argv)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/management/commands/test.py", line 26, in run_from_argv
super().run_from_argv(argv)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/management/base.py", line 308, in run_from_argv
parser = self.create_parser(argv[0], argv[1])
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/management/base.py", line 282, in create_parser
self.add_arguments(parser)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/management/commands/test.py", line 47, in add_arguments
test_runner_class = get_runner(settings, self.test_runner)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/test/utils.py", line 301, in get_runner
test_runner_class = test_runner_class or settings.TEST_RUNNER
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/conf/__init__.py", line 57, in __getattr__
self._setup(name)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/conf/__init__.py", line 44, in _setup
self._wrapped = Settings(settings_module)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/conf/__init__.py", line 107, in __init__
mod = importlib.import_module(self.SETTINGS_MODULE)
File "/Library/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/davea/Documents/workspace/mainpage_project/mainpage_project/settings/test.py", line 1, in <module>
from mainpage.base import *
ModuleNotFoundError: No module named 'mainpage.base'
How do I properly reference my settings?

I'm not sure where you're getting the mainpage part of from mainpage.base import *.
You can either change it to the correct absolute import:
from mainpage_project.settings.base import *
Or relative import:
from .base import *
Note that the absolute import requires /Users/davea/Documents/workspac to be in PATH.