Django problem: sqlite error when running"manage.py migrate"

Just ran into a problem with creating a Django virtualenv.  I built Python from source, but I didn't have the libsqlite3-dev library installed.  (I'm using Debian, but the same problem applies to Ubuntu.) 

So when I tried to run "demo/manage.py migrate" in my Django virtualenv, I got this error:

ImportError: No module named 'pysqlite2'

Once I installed libsqlite3-dev rebuilt Python with "make clean install", it worked!

The fix is documented in the Stack Overflow post "No module named _sqlite3".