Can only get "manage.py runserver" if I use python3 instead of python

[Ja Cre]

I have been working through the initial tutorial and ran into a load of issues with my anaconda install using python 2.7. In the end it wouldn't launch the server.

Anyway, I decided to change up on my machine to python3. That said, I am now getting strange results which are:

If I use the terminal command $python -m django --version I get the following:

"../Contents/MacOS/Python: No module named django"

 

If I change to "$python3 -m django --version" terminal gives me back: "1.11.4"

Now, when I am in the tutorial and starting again from the beginning I do the following: "$django-admin startproject mysite"

This seemed to work.

However, when I tried: "$python manage.py runserver" I get the following:

Traceback (most recent call last):

  File "manage.py", line 17, in <module>

    "Couldn't import Django. Are you sure it's installed and "

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?

If I change to include 3, so "$python3 manage.py runserver" all is well.

My question is do I need to always use python3 in every command now? I does not say that in the tutorial.

My Mac OSx has a native install of 2.7 which I believe is required by my machine for other apps dependency.

Any help would be really appreciated!

[Antonis Christofides]

Hi,

The Python 3 installation is completely separate from Python 2 (the same would hold if you had both 2.7 or 2.6, or 3.6.0 and 3.6.1; each Python version you have installed on the system is completely separate from the others). Somehow when you originally installed Django, you did so in Python 3. So Python 2 has no Django installed. If you install Django on Python 2 as well, you will be able to run it either way.

Make sure you also learn to use virtualenv.

Regards,

Antonis

Antonis Christofides
http://djangodeployment.com

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[Ja Cre]

Thanks Antonis,

I am now up and running with virtualenv and working great.

I appreciate your help!

[Sol Chikuse]

Hi Ja,

Just to add to what Antonis said, you can also create virtual environments with Python3 using the below code:

python3 -m venv your_virtual_dir_name

For instance to create a virtual directory with name mysite you will have to type:

python3 -m venv mysite

And then you can install django and other packages in that environment. You will have to activate it first just like with virtualenv.

Happy Coding!