How to solve SyntaxError on autogenerated manage.py?

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

Can somebody please help me?

Update: 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)