[Django]-Django manage.py runserver invalid syntax

Edit your manage.py file as given below:

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

if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "DEGNet.settings")
    try:
        from django.core.management import execute_from_command_line
    except ImportError as exc:
        raise ImportError(
            "Couldn't import Django. Are you sure it's installed and "
            "available on your PYTHONPATH environment variable? Did you "
            "forget to activate a virtual environment?"
        )
    execute_from_command_line(sys.argv)

Note that from exc is removed from the file. It is not required in the manage.py file.

arulmr

[Django]-ValueError: The field admin.LogEntry.user was declared with a lazy reference

I faced same problem but now solved with this cmd:

python3 manage.py runserver

suria sarath

Make sure that your virtualenv is activated. Suppose the name of your virtualenv is pythonpy, then run these commands:

virtualenv pythonpy
workon pythonpy #After running these command, you should see something like this but your file path may be different: “(pythonpy) C:\Users\ MyDjangoProject \
Then go to the project folder which contains manage.py
(pythonpy) C:\Users\ MyDjangoProject \ #Same path as above
Then simple run the server:

python manage.py runserver #This will give you the project path to the localhost. Copy and paste the URL in the browser and should work.

HAL 9000

Try (from command line):

python3 manage.py runserver

If I used this (no python3) instead:

python manage.py runserver

the error persisted. This method allows you to not have to alter manage.py (so you can keep “from exc”).

Mountain Scott

You just forgot to activate the virtual environment , do it like that :

source /home/adel/Dev/Python/DjangoProjects/myproject/venv/bin/activate

And than you can run the server :

python manage.py runserver

ADEL NAMANI

i’ve also got this error but solve it by installing pipenv first,

try run this first

pipenv shell django==2.1

then you should be able to run

python3 manage.py runserver

Hendra Sirait

Ensure you’re running the app from virtualenv i.e if you’ve created a virtualenv for your project, then activate the venv first.

me@debian:~/Desktop/webapp$source venv/bin/activate 
(venv) me@debian:~/Desktop/webapp$python manage.py runserver

7guyo

What’s happening is that the wrong version of python is being used, which may not have all the dependencies in your virtualenv. I get this error when using sudo manage.py: using sudo changes the version of python which is being used to /usr/bin/python.

The problem is solved by specifying which version of python to use when using sudo:

sudo /path/to/my/env/bin/python manage.py makemigrations

Micah Walter

I have met the same problem, and I find it strange because I have activated the virtualenvironment and set the python3, however, I meet this problem when I use this statement “python manage.py runserver”.I use this statement often but I meet this only once, and I restart my virtualenvironment and it runs, hope you wil,too.

吴泽森

I was facing the same issue.

Activated venv & ran python manage.py runserver wasn’t working.

I could see the venv was activated but still it wasn’t working. Then tried python3 manage.py runserver which got rid of exc issue but now it wasnt detecting my installed libraries.

The change I made that broke it was renaming the base folder ( kind of same situation like OP base folder location was different now).

But wait, how does this impact anything?

A variable that stores a full path to venv inside venv/bin/activate is
now no longer valid.

Resolution:

deactivate venv if already running
open venv/bin/activate
search for VIRTUAL_ENV variable and rename as per the new folder changes made.
activate venv source venv/bin/activate
run python manage.py runserver

Tada, everything is back to normal and we can happily enjoy our lemonade.

Aklesh Sakunia

I’ve got also the same issue with Python 3.4.4 and Django 2.0. I tried the last solution, nothing works (no need to delete that: from exc on the line 14).

Just run your server with:

python manage.py runserver

Instead of:

./manage.py runserver #or '.\manage.py runserver' for Windows

Serge Kishiko

I have no problem running this way：

sudo ./**(your path)**/bin/python manage.py runserver

user9521248

i had the same problem. I solved it by simply specifying the python version i.e type python3 manage.py runserver instead of python manage.py runserver

autopilot

i re installed the v env