Django core exceptions improperlyconfigured error loading psycopg2 module no module named psycopg2

On MacOS, psycopgy2 v2.8.4 and its binary isn’t compatible with python 3.8 yet.

Downgrade to python 3.7. All works.

1-  On mac (outside venv), Uninstall 3.8 and then install 3.7 using instructions: https://www.youtube.com/watch?v=X2VXCEfIgC0

2- Go to your django project main folder, delete ‘venv’ folder and ‘manage.py’

3- Install new venv using python 3.7. command:  python3 -m venv ./venv

4- Run venv. Command: source ./venv/bin/activate

5- Install django in this new venv again. Command: pip3 install django
This will create ‘django-admin’ under ./venv/bin/ and the django libraries.

6- Create manage.py like you would do for a new project again. Command: django-admin startproject <project folder> . (notice the ‘.’ in end)

The command wont run as previous already exists. So before doing so, rename it to _temp and after running the command which creates a new folder, copy _temp contents to the new . Delete _temp.

7-Run: pip3 install psycopg2

and: pip3 install psycopg2-binary

(If you get an error pg_config executable not found error then run under venv, run following command before installing psycopg again:

export PATH=“/Applications/Postgres.app/Contents/Versions/latest/bin:$PATH)

Hi all, First of all, I’ve read all the posts I could find about this problem to no avail

I’ve got an up&running default webapp with python3 and django already working with default db.sqlite2. I now need to change all the db backend to psql.

So, from these sources:

https://pypi.org/project/psycopg2/
https://www.psycopg.org/docs/install.html

I’ve installed psycopg2-binary, OK. Then, from this source:

https://www.enterprisedb.com/postgres-tutorials/how-use-postgresql-django

I’ve modified settings.py, DATABASES section, to use psql instead of sqlite. I’ve tried:

'ENGINE': 'django.db.backends.postgresql_psycopg2',

and it failed. Then, from some youtube videos, I tried:

'ENGINE': 'django.db.backends.postgresql',

which also fails… The error is this one, when I try to make migrations:

(env) PS D:Usersllagos.NB-KEYONE15Visual Studio projectsecommerce-psql> python manage.py makemigrations
Traceback (most recent call last):
File «D:Usersllagos.NB-KEYONE15Visual Studio projectsecommerce-psqlenvlibsite-packagesdjangodbbackendspostgresqlbase.py», line 25, in
import psycopg2 as Database
ModuleNotFoundError: No module named ‘psycopg2’
…
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: No module named ‘psycopg2’
So, what’s wrong with this settings.py file? is this correct? I’ve tried to google for information but again, no luck. Documentation for psycopg2 doesn’t say what to change on settings.py. It just say «install and code», but when using django, there are previous steps, like this settings.py file.

My env:

(env) PS D:Usersllagos.NB-KEYONE15Visual Studio projectsecommerce-psql> pip freeze
asgiref==3.3.4
astroid==2.5.6
colorama==0.4.4
Django==3.2.2
isort==5.8.0
lazy-object-proxy==1.6.0
mccabe==0.6.1
psycopg2-binary==2.8.6
pylint==2.8.2
pylint-django==2.4.4
pylint-plugin-utils==0.6
pytz==2021.1
sqlparse==0.4.1
toml==0.10.2
wrapt==1.12.1
(env) PS D:Usersllagos.NB-KEYONE15Visual Studio projectsecommerce-psql>

So far, those are all my changes… Again, this is happily working with default dblite. I just installed the module, and modified the settings file.

Thanks a lot for any hint!

Regards,

Updated

Speed up your computer today with this simple download.

This tutorial is written to help you if you get Django error while loading psycopg error code.

On MacOS, psycopgy2 v2.8.4 and its binary are not yet compatible with Python 3.8.

1- On Macintosh (except venv) uninstall 3.8, then install 3.7 following the instructions: https://www.youtube.com/watch?v=X2VXCEfIgC0

2- Go to the main trusted folder of your Django project, delete the venv and manage.py folder

3- Install new venv with Python 3.7. Command: python3 -m venv ./venv

5- Reinstall django in this new venv. Command: pip3 install django This will create django-admin in ./venv/bin/ and django libraries.

6- For example, create manage.py just like you would for a new company. Command: django-admin startproject . (note the “.” at the end)

The command will never be executed because the previous one already exists. Therefore, rename it to -_temp beforehand and after executing the command that created the new folder, copy the _temp data to the new one. Remove _temp.

(If you get an error, the pg_config executable may not have encountered an error, then run it under venv, run the Apply command before reinstalling psycopg:

  export PATH = â € œ / Applications / Postgres.app / Contents / Versions / last / bin: $ PATH) 

I want to use Postgresql with Django, so this is what I did:

  sudo apt-get install libpq-dev python-devsudo apt-get updatework on monenvsudo pip install psycopg2 

  ./manage.py syncdb 

  django.core.Exceptions.ImproperlyConfigured: Error loading psycopg2 module: No psycopg2 module 

  DATABASES say =    'Originally':        'ENGINE': 'django.db.backends.postgresql_psycopg2 ',        "NAME": "mydb",        'USER': 'postgre',        'PASSWORD': 'password1234',        'HOST': 'localhost',        'HARBOR': '',     

Hello everyone, first of all I read all the messages that come up on this issue so as not to benefit from it 🙁

I am running a standard web application containing Python3, and Django is already running with traditional db.sqlite2. Now I need to change all these db backends to psql.

I changed settings.py, DATABASES section, to use psql instead of SQLlite. I’ve tried:

which also fails … The error was as follows, I tried to create migrations:

(env) PS D: Users llagos.NB-KEYONE15 Visual Studio Projects ecommerce-psql> python manage.py makemigrations
Rollback (last call last):
File “D: Users llagos.NB-KEYONE15 Visual Studio projects ecommerce-psql env lib site-packages django db backends postgresql base.py”, 25, line in
psycopg2 from import
databaseModuleNotFoundError: no module named “psycopg2”
…
django.core.Exceptions.ImproperlyConfigured: error loading psycopg2 module: no module named “psycopg2”
So, is there something wrong with this settings.py file? is this the correct process? I tried googling my way, but again with no success. The psycopg2 documentation does not ckIt is said what should be changed in relation to settings.py. It just says “install and code”, although there are older ladders in django like this settings.py file.

(env) PS D: Users llagos.NB-KEYONE15 Visual Studio projects ecommerce-psql> Freeze pip
asgiref == 3.3.4
Astroids == 2.5.6
colorama == 0.4.4
Django == 3.2.2
isort == 5.8.0
lazy proxy object == 1.6.0
mccabe == 0.6.1
psycopg2-binary == 2.8.6
pylint == 2.8.2
pylint-django == 2.4.4
pylint-plugin-utils == 0.6
pytz == 2021.1
sqlparse == 0.4.1
toml == 0,10.2
Wrapt == 1.12.1
(env) PS D: Users llagos.NB-KEYONE15 Visual Studio Projects ecommerce-psql>

While these are all my changes … Again, this works great with dblite involved. I just installed the module and modified the settings file.

  'ENGINE': 'django.db.backends.postgresql_psycopg2', 

  'ENGINE': 'django.db.backends.postgresql', 

Welcome to the coding section at

Hello entrepreneurs

How are you guys? I hope you are all right. Today I am getting the following django.core.Exceptions.ImproperlyConfigured error: Module threading error psycopg: There is no module named psycopg in Python. So, here I am going to tell you about most of the possible solutions.

Notwasting time, let’s start with this article to fix this error.

How Django.core.Exceptions.ImproperlyConfigured: Error Loading Psycopg Module: No Module Named Psycopg Occurs Error?

Today I am getting the following error django.core.Exceptions.ImproperlyConfigured: Psycopg streaming module error: There is no module named psycopg in Python.

How To Resolve Django.core.Exceptions.ImproperlyConfigured: Error Restarting Psycopg Module: Unnamed Psycopg Module Error?

Solution 1

type pip install psycopg2-binary worked for me innew virtual environment

Solution 2

I usually get the same error; Although psycopg2 was installed on my current system using apt-get , my virtualenv was unable to get it:

Import

 >>> psycopg2Traceback (last call last):  File "", line 1, in ImportError: no module named psycopg2

The issue was fixed by using Pip install psycopg2-binary in virtualenv (or pip add psycopg2 for versions <2.8 psycopg2).

Summer

Everything revolves around this main problem. Hope all solutions helped you. Comment on your thoughts and concerns below. Also please comment below which solution worked for you? Thanks.

Read also

• Error installing Pip python2?

Error loading psycopg2 module: No module named ‘psycopg2’ #1282

Hi all, First of all, I’ve read all the posts I could find about this problem to no avail 🙁

I’ve got an up&running default webapp with python3 and django already working with default db.sqlite2. I now need to change all the db backend to psql.

So, from these sources:

I’ve installed psycopg2-binary, OK. Then, from this source:

I’ve modified settings.py, DATABASES section, to use psql instead of sqlite. I’ve tried:

and it failed. Then, from some youtube videos, I tried:

which also fails. The error is this one, when I try to make migrations:

(env) PS D:Usersllagos.NB-KEYONE15Visual Studio projectsecommerce-psql> python manage.py makemigrations
Traceback (most recent call last):
File «D:Usersllagos.NB-KEYONE15Visual Studio projectsecommerce-psqlenvlibsite-packagesdjangodbbackendspostgresqlbase.py», line 25, in
import psycopg2 as Database
ModuleNotFoundError: No module named ‘psycopg2’
.
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: No module named ‘psycopg2’
So, what’s wrong with this settings.py file? is this correct? I’ve tried to google for information but again, no luck. Documentation for psycopg2 doesn’t say what to change on settings.py. It just say «install and code», but when using django, there are previous steps, like this settings.py file.

(env) PS D:Usersllagos.NB-KEYONE15Visual Studio projectsecommerce-psql> pip freeze
asgiref==3.3.4
astroid==2.5.6
colorama==0.4.4
Django==3.2.2
isort==5.8.0
lazy-object-proxy==1.6.0
mccabe==0.6.1
psycopg2-binary==2.8.6
pylint==2.8.2
pylint-django==2.4.4
pylint-plugin-utils==0.6
pytz==2021.1
sqlparse==0.4.1
toml==0.10.2
wrapt==1.12.1
(env) PS D:Usersllagos.NB-KEYONE15Visual Studio projectsecommerce-psql>

So far, those are all my changes. Again, this is happily working with default dblite. I just installed the module, and modified the settings file.

Thanks a lot for any hint!

The text was updated successfully, but these errors were encountered:

Источник

How to Solve Error Message Error loading psycopg2 module: No module named ‘psycopg2’ in Django Application

Introduction

Upon executing a Django-based internal service to runn a Django-based application, there is an error message appear. It is because of the error message, the Django-based internal service cannot start properly. The following are the execution of the Django-based internal service :

Actually, the error message appear in the above command execution is very clear. It cannot find module with the name of ‘psycopg2’. The reason is because of the requirement to execute it will need the module with the name of ‘psycopg2’. It is available in the ‘settings.py’ file exist in the folder of the project as follows :

Solution

The application can run and receive request for further process by running a Django-based internal service. But it fail to run because it lack of a certain module needed. That module name is ‘psycopg2’. It is a module acts as a module or library for PostgreSQL database connection. The following are steps to handle the error message :

This is the first step by checking the available module or library exist in the current active python virtual environment. Just execute the following command :

Since there is no psycopg2 module available in the output of the above command, just install it. But first of all, search it whether the module or library with the name of ‘psycopg2’ available or not.

Continue on the first step, just execute the following command to check whether the module or library with the name of ‘psycopg2’ available or not. But make sure to install pip_search module first. It is a module for searching module or packages. The following is the command execution for searching ‘psycopg2’ module :

Install it by executing the following command :

Start to execute the Django-based internal service once more. If there are no more error appear, it will run the Django-based internal service properly.

Источник

How to Solve Error Message Error loading psycopg2 module: No module named ‘psycopg2’ in Django Application

Introduction

Upon executing a Django-based internal service to runn a Django-based application, there is an error message appear. It is because of the error message, the Django-based internal service cannot start properly. The following are the execution of the Django-based internal service :

Actually, the error message appear in the above command execution is very clear. It cannot find module with the name of ‘psycopg2’. The reason is because of the requirement to execute it will need the module with the name of ‘psycopg2’. It is available in the ‘settings.py’ file exist in the folder of the project as follows :

Solution

The application can run and receive request for further process by running a Django-based internal service. But it fail to run because it lack of a certain module needed. That module name is ‘psycopg2’. It is a module acts as a module or library for PostgreSQL database connection. The following are steps to handle the error message :

This is the first step by checking the available module or library exist in the current active python virtual environment. Just execute the following command :

Since there is no psycopg2 module available in the output of the above command, just install it. But first of all, search it whether the module or library with the name of ‘psycopg2’ available or not.

Continue on the first step, just execute the following command to check whether the module or library with the name of ‘psycopg2’ available or not. But make sure to install pip_search module first. It is a module for searching module or packages. The following is the command execution for searching ‘psycopg2’ module :

Install it by executing the following command :

Start to execute the Django-based internal service once more. If there are no more error appear, it will run the Django-based internal service properly.

Источник

How to Solve Error Message ModuleNotFoundError: No module named ‘psycopg2’

This is an article with a specific topic about how to solve error message as it exists in the title of the article. It occurs when a django application runs. It happens after adding the following content in the settings.py script inside the project folder :

The above line configurations is a specific script for connecting the django application to PostgreSQL database server. Suddenly, after saving the file, the runserver application execution is generating error. The error message is ModuleNotFoundError: No module named ‘psycopg2’. The following is the complete output error message :

Solving the Problem

To solve the above problem, there are several solutions and those solutions have a connection with one another. But the most important thing is the focus of the solution is in the existance of the ‘psycopg2’. How can the module with the name of ‘psycopg2’ can be available for further usage in the django application. There are several steps or solution to solve the problem. The following is the list of the alternative steps or solution :

1. Installing the psycopg2 package.

2. Install the psycopg2 package to the virtual environment.

In the following section, there will be a further detail explanation about the above steps for solving the problem.

Installing psycopg2 package to the operating system using apt tool

Since it is the Linux Ubuntu distribution, execute the following command to install the ‘psycopg2’ module :

The above command execution is relying on the apt tool program. Just make sure to choose the correct package name since the chosen package for the installation above is using python3. So, the package name for installation is ‘python3-psycopg. Make sure to search the compatible package using ‘apt search’ command.

Apparently, in this case, after executing the above command for installing psycopg2 to the operating system, the error message still occurs. So, if the error message is still occurs, just do the following step as another action to complete the solution.

Installing psycopg2 module in the python virtual environment using pip

The following is the command for executing psycopg2 to the running python virtual environment. The python virtual environment is ‘django-env’. The command for installing psycopg2 module is ‘pip install psycopg2’.

Installation of psycopg2-binary module in the python virtual environment using pip

Apparently, the solution in the previous step failed. There is an information about how to proceed the installation. It gives a solution to install a binary package with the name of ‘psycopg2-binary’. The following is the command execution :

In the output above, the python virtual environment is ‘django-env’. According to the output message of the running django web server, after the execution of the above step ends in a success, the error message disappear and the problem solved.

Источник

Configuring a Django PostgreSQL project is a straight-forward process that involves updating the settings.py file and adding one additional library (psycopg2). Depending on which IDE, OS, and Python version used there are several possible errors that can arise. We’ll address those here as well.

Django comes configured to work with a local SQLite database by default, which is great for early-stage app development. Unfortunately, it’s not great for production use or even some more stringent development tasks like concurrent I/O. Below are the steps needed to configure a new Django project for use with a PostgreSQL database.

Django uses some third-party libraries by default but does not install the required libraries to support postgres. Here’s a look at the packages installed after a clean install of Django on a new virtual environment:

asgiref==3.3.1
Django==3.1.4
pytz==2020.4
sqlparse==0.4.1

Django is designed to use a project-folder sqlite database by default that is configured in the project/project/settings.py and to use the django.db.backends.sqlite3 adapter as such:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}

This tells Django to use a database named BASE_DIR/db.sqlite3 as the project’s database. To use a postgres database, the following steps must happen:

1. Specify the correct Django adapter + credentials for Postgres
2. Install necessary 3rd party library for Postgres
3. Specify credentials to new/existing postgres database

These steps are simple enough but can benefit from some elaboration.

Step 1: Specify Postgres Adapter + Credentials

To make Django work with Postgres, an adapter other than the default sqlite adapter must be specified. I like working with the psycopg2 Postgres adaptor and have shown how to specify that adapter below:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': "db_name",
        'USER': "db_username",
        'PASSWORD': "db_password",
        'HOST': "db_host",
        'PORT': "db_port",  # 5432 by default
    }
}

In older versions of Django, the adapter was named django.db.backends.postgresql_psycopg2. This was changed from release 1.9 forwards and summarized in the official release notes as such:

The PostgreSQL backend django.db.backends.postgresql_psycopg2 is also available as django.db.backends.postgresql. The old name will continue to be available for backward compatibility.

Obviously, you need to have access to a Postgres database to make this work well. You should replace the values in the above code with the database to which your project will connect.  Common values for HOST and PORT are localhost and 5432 respectively, which 5432 being the default Postgres port, as described in the official PostgreSQL documentation.

Step 2: Install Necessary Postgres Adaptor

While Django ships with an “adapter” for Postgres, it still needs a 3rd party library for support. If you simply add the code above and run python manage.py makemigrations you’ll get a stacktrace with the following exception:

django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: No module named 'psycopg2'

Django’s django.db.backends.postgresql adaptor bridges Django’s own ORM models to Postgres, but doesn’t actually provide the adaptors needed for actual Postgres usage. Rather than re-inventing the wheel, the Django Project has elected to use the psycopg2 library—arguably the most popular python adapter for Postgres.

To make the Django adaptor work, the psycopg2 library needs to be installed with this command: pip install psycopg2. Running the pip freeze command should now produce the following output:

asgiref==3.3.1
Django==3.1.4
psycopg2==2.8.6
pytz==2020.4
sqlparse==0.4.1

Common Issues with psycopg2

Depending on what platform, Python version, or IDE used; psycopg2 has some known-issues when it comes to installation. The most common is a DLL error that will prevent Django from creating the required migrations:

ImproperlyConfigured Exception

django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: DLL load failed while importing _psycopg: The specified module could not be found.

This error indicates that a core DLL file is missing from the psycopg2 installation. It’s important to recognize that psychopg2 is a third-party library and, as such, may not always be compatible with the latest Python version. In some cases, reverting to a previous version of Python may be necessary.

Option 1: Use pyscopg2-binary

Note: This package comes with its own version of some core libraries that may, under certain conditions, cause conflicts with other libraries. See the developer’s notes for more info.

Option 2: Manual Copy from System Install

Some IDEs, at least PyCharm in my experience, may have trouble installing psycopg2. In such cases, a possible workaround is to install psycopg2 to the main system install of python, then copy those files manually into your project’s virtual environment’s site-packages directory. On a Windows machine, the steps are as follows:

1. Using the Windows terminal: pip install psycopg2
2. Copy Program Files/PythonXX/site-packages/psycopg2 to your virtual environments’ site-packages directory.

If installed without elevated privileges, the psycopg2 library may install to the local User’s Python installation. If this is the case (you won’t find the psycopg2 package in the directory above) look in the following directory:

.
└── C:/
    └── Users/
        └── pc/
            └── AppData/
                └── Roaming/
                    └── Python/
                        └── Python38/
                            └── site-packages/
                                └── psycopg2

Migrate Changes

Assuming psycopg2 was configured correctly, your project should be adequately configured for basic Postgres usage now. Assuming your project doesn’t require any changes to models or other areas to work with Postgres, running the makemigrations and migrate commands should give you the confirmation of success you need. Below is what the output should look like—for a blank Django project having just configured Postgres:

(venv) C:pathtoyour-project>python manage.py makemigrations
No changes detected

(venv) C:pathtoyour-project>python manage.py migrate
Operations to perform:
  Apply all migrations: admin, auth, contenttypes, sessions
Running migrations:
  Applying contenttypes.0001_initial... OK
  Applying auth.0001_initial... OK
  Applying admin.0001_initial... OK
  Applying admin.0002_logentry_remove_auto_add... OK
  Applying admin.0003_logentry_add_action_flag_choices... OK
  Applying contenttypes.0002_remove_content_type_name... OK
  Applying auth.0002_alter_permission_name_max_length... OK
  Applying auth.0003_alter_user_email_max_length... OK
  Applying auth.0004_alter_user_username_opts... OK
  Applying auth.0005_alter_user_last_login_null... OK
  Applying auth.0006_require_contenttypes_0002... OK
  Applying auth.0007_alter_validators_add_error_messages... OK
  Applying auth.0008_alter_user_username_max_length... OK
  Applying auth.0009_alter_user_last_name_max_length... OK
  Applying auth.0010_alter_group_name_max_length... OK
  Applying auth.0011_update_proxy_permissions... OK
  Applying auth.0012_alter_user_first_name_max_length... OK
  Applying sessions.0001_initial... OK

These are all the core Django models being migrated to the Postgres database.

Discussion

Django is an incredible framework for building multi-purpose web applications ranging from hobbyist projects to enterprise-caliber endeavors. As we’ve seen here, Django can be configured to work with PostgreSQL relatively easily. There may be some quirks depending on your OS or IDE but I’ve still to see anything that would prevent the setup outlined here from being troubleshot.