manage.py

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

if __name__ == '__main__':
    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myfirstband.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
    # to launch coverage after manage.py test : source : https://github.com/django-nose/django-nose/issues/180

    is_testing = 'test' in sys.argv

    if is_testing:
        import coverage

        cov = coverage.coverage(source=['core', 'authentication', 'musicians', 'band', 'announcement'],
                                omit=['*/tests/*', '*/forms.py', '*/migrations/*', '*/__init__.py', '*/admin.py',
                                        '*/urls.py', '*/apps.py'])
        cov.set_option('report:show_missing', True)
        cov.erase()
        cov.start()

    execute_from_command_line(sys.argv)

    if is_testing:
        cov.stop()
        cov.save()
        cov.report()