[Answer]-Error message when creating django project

The situation is described in the documentation:

The django-admin script should be on your system path if you installed
Django via its setup.py utility. If it’s not on your path, you can
find it in site-packages/django/bin within your Python installation.
Consider symlinking it from some place on your path, such as
/usr/local/bin.

For Windows users, who do not have symlinking functionality available,
you can copy django-admin.exe to a location on your existing path or
edit the PATH settings (under Settings – Control Panel – System –
Advanced – Environment…) to point to its installed location.

In other words, either place django-admin.exe somewhere under an existing path in PATH, or add site-packages/django/bin to the PATH.