python unix install, sqlite3

[Simon]

I installed the source code on unix for python 2.5.1. The install went
mainly okay, except for some failures regarding:
_ssl, _hashlib, _curses, _curses_panel.

No errors regarding sqlite3.
However, when I start python and do an import sqlite3 I get:

/ptmp/bin/> python
Python 2.5.1 (r251:54863, May 29 2007, 05:19:30)
[GCC 3.3.2] on sunos5
Type "help", "copyright", "credits" or "license" for more information.
>>> import sqlite3
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/ptmp/Python-2.5.1/lib/python2.5/sqlite3/__init__.py", line
24, in <module>
    from dbapi2 import *
  File "/ptmp/Python-2.5.1/lib/python2.5/sqlite3/dbapi2.py", line 27,
in <module>
    from _sqlite3 import *
ImportError: No module named _sqlite3