Django: 'python manage.py runserver' gives "Segmentation fault" error

Question

I just installed Python and Django for the first time while following this tutorial on the Django site, and everything up to this part worked just fine and produced no errors.

Now I'm at the "The development server" section, and ran the command python manage.py runserver while in my project directory where the manage.py is located and I get this error:

Segmentation fault

Nothing else.

Anyone know what's going on here and how I can solve this?

If it matters, this is my manage.py file (the django in the from django.core.management ... line is marked as an error in my IDE (PyCharm) and the error says Unresolved reference 'django'):

#!/usr/bin/env python
import os
import sys

if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "davilex.settings")

    from django.core.management import execute_from_command_line

    execute_from_command_line(sys.argv)

if you think Unresolved reference is the issue .. you can find the relevant question in SO — Raja Simon
– Raja Simon, Commented Jan 12, 2016 at 4:37
A segmention fault usually related to a problem on a lower level than Python: C libraries, OS or even hardware. What system are you using? — Klaus D.
– Klaus D., Commented Jan 12, 2016 at 4:47
Occurred for me when using Django with Postgres on python3.7. Created a venv based on python3.6 and it worked fine — Matthew Hegarty
– Matthew Hegarty, Commented Sep 10, 2018 at 14:34

Cerin · Accepted Answer · 2020-02-02 06:16:27Z

4

This happened to me in a Django project where I had a lot of packages that had C-extensions. After I ran an Ubuntu system package update, I suddenly found that the manage.py command seg faulted. Turns out, some C-extensions link themselves to system libraries, and if a package update changes those libraries, it could cause the C-extensions to crash.

Since I had installed everything inside a Python virtualenv, I just deleted and regenerated it, and that fixed the error.

answered Feb 2, 2020 at 6:16

Cerin

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1 Comment

Alexander Köb Over a year ago

With pipenv, I needed to completely remove the directory of the virtualenv, just doing pipenv uninstall --all followed by pipenv install did not do the trick.

VaelynPhi · Accepted Answer · 2016-06-19 07:25:20Z

3

I had this same issue following the tutorial pretty much verbatim (except that I am using git-bash in Windows, and used "virtualenv" in place of "mkvirtualenv" and "source projectdir/Scripts/activate" in place of "workon projectdir".

Running

python -vvvvv manage.py runserver

Gave me the warning that I had migrations that needed running (which the tutorial says to ignore) with

python manage.py migrate

Which is presumably not a step you can really skip in some cases, despite what the tutorial says. After this, runserver worked without error.

answered Jun 19, 2016 at 7:25

VaelynPhi

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Comments

Amanaway · Accepted Answer · 2023-01-11 09:32:13Z

2

install PyMysql:

python3 -m pip install PyMysql

Setting add mysql conf:

DATABASES = {  
    'default': {
    'ENGINE': 'django.db.backends.mysql',
    'NAME': 'your database name',
    'USER': 'your user',
    'PASSWORD': 'your pwd',
    'HOST': 'ip',
    'PORT': 'port',
    }
}

__init__.py add
import pymysql
pymysql.install_as_MySQLdb()

enjoy~

answered Jan 11, 2023 at 9:32

Amanaway

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Prashant Nair · Accepted Answer · 2018-02-08 12:27:37Z

1

I had a similar issue while setting up a project on mac. In the end, turned out it because of value set in DATABASES.

DATABASES = {
    'default': {
    'ENGINE': 'django.db.backends.mysql',
    'NAME': 'blue9',
    'USER': 'root',
    'PASSWORD': 'root',
    'PORT': '',
    'HOST': ''
}

Empty value of the 'PORT' and 'HOST' was causing the problem. These keys should not have an empty value. Either provide a finite value or don't specify them at all.

answered Feb 8, 2018 at 12:27

Prashant Nair

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Comments

hassanzadeh.sd · Accepted Answer · 2020-08-25 09:15:44Z

1

I think this issue related database config, first step check postgres library install config

pip install psycopg2-binary==2.8.5

second step check database config in django project settings :

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.postgresql_psycopg2',
    'NAME': '<database_name>',
    'USER': '<user_name>',
    'PASSWORD': '<password>',
    'HOST': '<host-name>',
    'PORT': '<port number : default : 5432>',
}

}

answered Aug 25, 2020 at 9:15

hassanzadeh.sd

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