从SCM下载的Django项目无manage.py，如何本地运行？

Got it, let's work through how to get this Django project up and running even without the usual manage.py file. First, let's make sure we're actually dealing with a valid Django project—check for these key files/directories in your downloaded code:

• A settings.py file (or a folder containing multiple settings modules)
• A root urls.py file (the main URL configuration)
• A requirements.txt or pyproject.toml that lists Django as a dependency
• App folders with files like models.py, views.py, or admin.py

Option 1: Use django-admin with manual settings configuration #

manage.py is just a convenience wrapper around the django-admin tool that automatically points to your project's settings. If it's missing, you can replicate this manually:

1. Install dependencies first (if you haven't already):

   pip install -r requirements.txt
   

   If there's no requirements.txt, just install Django directly: pip install django

2. Find your settings module path:
   Locate where settings.py lives. For example, if it's inside a folder named my_project (path: my_project/settings.py), your settings module is my_project.settings.

3. Set the DJANGO_SETTINGS_MODULE environment variable:

   • On Linux/macOS:

     export DJANGO_SETTINGS_MODULE=my_project.settings
     

   • On Windows (Command Prompt):

     set DJANGO_SETTINGS_MODULE=my_project.settings
     

   • On Windows (PowerShell):

     $env:DJANGO_SETTINGS_MODULE = "my_project.settings"
     

4. Start the development server:

   django-admin runserver
   

Option 2: Create your own manage.py file #

You can easily generate a custom manage.py—it's just a short script. Create a file named manage.py in your project root with this content:

#!/usr/bin/env python
"""Django's command-line utility for administrative tasks."""
import os
import sys

def main():
    """Run administrative tasks."""
    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'my_project.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 __name__ == '__main__':
    main()

Replace 'my_project.settings' with your actual settings module path, then run:

python manage.py runserver

Option 3: If you downloaded a standalone Django app (not a full project) #

Sometimes you might get just a single Django app instead of a complete project. Here's how to integrate it:

1. Create a new base Django project:

   django-admin startproject my_site
   

2. Copy your downloaded app folder into the my_site directory (same level as the new manage.py).

3. Open my_site/settings.py and add your app's name to the INSTALLED_APPS list:

   INSTALLED_APPS = [
       'django.contrib.admin',
       'django.contrib.auth',
       'django.contrib.contenttypes',
       'django.contrib.sessions',
       'django.contrib.messages',
       'django.contrib.staticfiles',
       'your_app_name',  # Add your app here
   ]
   

4. Launch the server:

   python manage.py runserver
   

内容的提问来源于stack exchange，提问作者Manohar