How to solve SyntaxError on autogenerated manage.py?
PythonSyntax ErrorPython Problem Overview
I'm following the Django tutorial https://docs.djangoproject.com/es/1.10/intro/tutorial01/
I've created a "mysite" dummy project (my very first one) and try to test it without altering it.
django-admin startproject mysite
cd mysite
python manage.py runserver
File "manage.py", line 14
) from exc
^
SyntaxError: invalid syntax
I'm getting a SyntaxError on a file that was generated by the system itself. And I seem unable to find anyone else who has gone through the same issue.
I'll add some data of my setup in case it may be of use
$ vpython --version
Python 2.7.12
$ pip --version
pip 9.0.1 from /home/frank/.local/lib/python2.7/site-packages (python 2.7)
$ python -m django --version
1.10.6
Adding contents of autogenerated manage.py
cat manage.py
#!/usr/bin/env python3
import os
import sys
if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.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?"
) from exc
execute_from_command_line(sys.argv)
Python Solutions
Solution 1 - Python
Make sure which python version you connect the django with (Make sure to activate the virtual env if you are using any).
When you install django using just
pip install django
then you have to run
python manage.py startapp <yourApp name>
else if you have used:
pip3 install django
then you have to run
python3 manage.py startapp <yourapp name>
Refer:
Solution 2 - Python
You can try with python3 manage.py runserver.
It works for me.
Solution 3 - Python
You should activate your virtual environment.
In terminal, source env/bin/activate. Depending on your shell, something like (env) should now be a part of the prompt.
And now runserver should work. No need to delete exc part!
Solution 4 - Python
Just activate your virtual environment.
Solution 5 - Python
I was experiencing the same but this was solved by running with specific python 3.6 as below:
python3.6 manage.py runserver
Solution 6 - Python
For running Python version 3, you need to use python3 instead of python.
The final command will be:
python3 manage.py runserver
Solution 7 - Python
Its a simple solution actually one i just ran into. Did you activate your virtual environment?
Solution 8 - Python
It's best to create a virtual environment and run your Django code inside this virtual environment, this helps in not changing your existing environments. Here are the basic steps to start with the virtual environment and Django.
-
Create a new Directory and cd into it.
mkdir test,cd test -
Install and Create a Virtual environment.
python3 -m pip install virtualenv virtualenv venv -p python3
-
Activate Virtual Environment:
source venv/bin/activate -
Install Django:
pip install django -
Start a new project:
django-admin startproject myproject -
cd to your project and Run Project:
cd myproject,
python manage.py runserver
- You can see your project here:
http://127.0.0.1:8000/
Solution 9 - Python
After testing with precise instructions (using python2 or python3 instead of just "python") I've constated that no matter what the tutorial says, this works ONLY with python3.
Solution 10 - Python
The solution is straightforward. the exception from manage.py is because when running the command with python, Django is unable to predict the exact python version, say you may have 3.6, 3.5, 3.8 and maybe just one of this versions pip module was used to install Django to resolve this either use:
./manage.py `enter code here`<command>
or using the exact python version(x.x) stands:
pythonx.x manage.py <command>
else the use of virtual environments can come in handy because its relates any pip django module easily to python version
- create env with pyenv or virtualenv
- activate (e.g in virtualenv => virtualenv env)
- run using python manage.py command
Solution 11 - Python
I solved same situation.
INSTALLED VERSION
python 3.6, django 2.1
SITUATION
I installed Node.js in Windows 10. After python manage.py runserver caused error.
ERROR
File "manage.py", line 14
) from exc
^
SyntaxError: invalid syntax
REASON
My python path changed to python-2.7 from python-3.6. (3.6 is correct in my PC.)
SOLUTION
Fix python path.
Solution 12 - Python
The following could be the possible reasons,
1. The virtual environment is not enabled
2. The virtual environment is enabled but the python version is different
To create virtual environment
$ virtualenv --python=python3 venv
To activate the virtual environment
$ source venv/bin/activate
Solution 13 - Python
Also, the tutorial recommends that a virtual environment is used (see Django documentation: https://docs.djangoproject.com/en/2.0/topics/install/#installing-official-release";). You can do this with pipenv --three. Once you've installed django with pipenv install django and activated your virtual environment with pipenv shell, python will refer to python3 when executing python manage.py runserver.
Pipenv documentation: https://pipenv.kennethreitz.org/
Solution 14 - Python
You must activate virtual environment where you have installed django. Then run this command
- python manage.py runserver
Solution 15 - Python
You should start your Virtual Environment,
How to do it?
First with terminal cd into the directory containing manage.py
Then type $source <myvenv>/bin/activate
replace
Another issue can that your root directory and venv mis-match. The structure should be something like this:
|-website
..facebook
..manage.py
..myvenv
..some other files
That is your virtual environment and manage.py should be in the same folder. Solution to that is to restart the project. If you are facing this error you must haven't coded anything yet, so restart.
Solution 16 - Python
I had the exact same error, but then I later found out that I forget to activate the conda environment which had django and other required packages installed.
Solution: Create a conda or virtual environment with django installed, and activate it before you use the command:
$ python manage.py migrate
Solution 17 - Python
Activate your virtual environment then try collecting static files, that should work.
$ source venv/bin/activate
$ python manage.py collectstatic
Solution 18 - Python
The django-admin maybe the wrong file.I met the same problem which I did not found on a different computer the same set-up flow.
After comparing two project, I found several difference at manage.py and settings.py, then I realized I created 2.0 django project but run it with python2.
runwhich django-adminin iterm
/Library/Frameworks/Python.framework/Versions/3.6/bin/django-admin
It looks like I got a django-admin in python3 which I didn't know why.So I tried to get the correct django-amin.
pip show django
then I got
Name: Django
Version: 1.11a1
Summary: A high-level Python Web framework that encourages rapid development and clean, pragmatic design.
Home-page: https://www.djangoproject.com/
Author: Django Software Foundation
Author-email: [email protected]
License: BSD
Location: /Library/Python/2.7/site-packages
Requires: pytz
In/Library/Python/2.7/site-packages, I found the django-admin
/Library/Python/2.7/site-packages/django/bin/django-admin.py
So I created project again by
/Library/Python/2.7/site-packages/django/bin/django-admin.py startproject myproject
then run
cd myproject
python manage.py runserver
succeeded
Solution 19 - Python
We have to create a virtual environment inside the project, not outside the project.. Then it will solve..
Solution 20 - Python
It seems you have more than one version of Python on your computer. Try and remove one and leave the only version you used to develop your application.
If need be, you can upgrade your version, but ensure you have only one version of Python on your computer.
Solution 21 - Python
I landed on the same exact exception because I forgot to activate the virtual environment.
Solution 22 - Python
I was also getting the same error.
Then I went back to the folder where the environment folder is there and I forgot to activate a Virtual environment so only I was getting this error.
Go to that folder and activate the virtual environment.
$ source env/bin/activate
Solution 23 - Python
I had this issue (Mac) and followed the instructions on the below page to install and activate the virtual environment
https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/
> $ cd [ top-level-django-project-dir ]
> $ python3 -m pip install --user virtualenv
> $ python3 -m venv env
> $ source env/bin/activate
Once I had installed and activated the virtual env I checked it
> $ which python
Then I installed django into the virtual env
> $ pip install django
And then I could run my app
> $ python3 manage.py runserver
When I got to the next part of the tutorial
> $ python manage.py startapp polls
I encountered another error:
File "manage.py", line 16
) from exc
^
SyntaxError: invalid syntax
I removed
from exc
and it then created the polls directory
Solution 24 - Python
Same issue occurred to me,But what I did was,
Just Replaced:
python manage.py runserver
with
python3 manage.py runserver
in the terminal(macOsX). Because I am using Python version 3.x
Solution 25 - Python
I encountered the same error when using pipenv. The issue was caused by not accessing Django correctly from within the virtual environment.
The correct steps using pipenv:
- Activate virtual environment:
pipenv shell - Install Django:
pipenv install django - Create a project:
django-admin startproject myproject - Navigate into project folder:
cd myproject - Start Django with pipenv:
pipenv run python manage.py runserver
Note: Pipenv will use the correct python version and pip within the virtual environment.
Solution 26 - Python
What am I wondering is though the django is installed to the container it may not be in the host machine where you are running the command. Then how will the command run. So since no above solutions worked for me.
I found out the running container and get into the running container using docker exec -it <container> bash then ran the command inside docker container. As we have the volumed container the changes done will also reflect locally. What ever command is to be run can be run inside the running container
Solution 27 - Python
For future readers, I too had the same issue. Turns out installing Python directly from website as well as having another version from Anaconda caused this issue. I had to uninstall Python2.7 and only keep anaconda as the sole distribution.
Solution 28 - Python
Have you entered the virtual environment for django? Run python -m venv myvenv if you have not yet installed.
Solution 29 - Python
Just do:
pipenv shell
Then repeat:
python manage.py runserver
And don't delete from exc as suggested above.
Solution 30 - Python
I had same problem and could solve it. It is related to the version of Django you've installed, some of them are not supported by python 2.7. If you have installed Django with pip, it means that you are installing the latest version of that which probably is not supported in python 2.7, You can get more information about it here. I would suggest to python 3 or specify the version of Django during installing (which is 1.11 for python 2.7).
Solution 31 - Python
I solved this problem to uninstall the multiple version of Python. Check Django Official Documentation for Python compatibility.
"Python compatibility
Django 2.1 supports Python 3.5, 3.6, and 3.7. Django 2.0 is the last version to support Python 3.4."
manage.py file
#!/usr/bin/env python
import os
import sys
if __name__ == '__main__':
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'work.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?"
) from exc
execute_from_command_line(sys.argv)
If removing "from exc" from second last line of this code will generate another error due to multiple versions of Python.
Solution 32 - Python
activate env by the Following Command
source pathetoYourEnv/bin/activate
then run command
python manage.py runserver
Solution 33 - Python
Solved my problem too when I activated my virtual environment using:
source bin/activate
Solution 34 - Python
The error is generated by using a later version of Django with an old python, probably of version 2.x.
To fix this I had to delete the .venv folder and recreate it with virtualenv -p python3 .venv && source .venv/bin/activate
Solution 35 - Python
You can solve this by adapting the code in your manage.py file to the following
#!/usr/bin/env python
import os
import sys
if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "djangochallenge.settings")
try:
from django.core.management import execute_from_command_line
except ImportError:
try:
import django
except ImportError:
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?"
)
raise
execute_from_command_line(sys.argv)
and your server should work fine.
Solution 36 - Python
This usually happens when Django isn't installed, and you're trying to run the manage.py file. Run pip3 install django or pip install django or python -m pip install django or python3 -m pip install django to install Django first.
If you think you've already installed Django, run pip/pip3/python -m pip/python3 -m pip show django. If you get a Warning: Package(s) not found: django, that means you haven't installed Django yet.
If you have a virtual environment, run source env/bin/activate to activate the environment on a Unix based system, like a Mac or Linux, where env is the folder in which your virtual environment is contained. On Windows, run env\Scripts\activate to activate the environment.
Solution 37 - Python
For me, this code worked
python3 manage.py runserver
Solution 38 - Python
You can just mention your python version, like this,
python3.5 manage.py runserver