[Tutor] Ubuntu 14.04 + Python 3.4.1 (pyvenv) + sqlite3

[Peter Otten]

Juan Christian wrote:

> So, I'm coding a software using Flask and sqlite3 on Ubuntu 14.04, I read
> that on Python 3.4.1, sqlite3 is default, but when I try to 'import
> sqlite3' I get:
> 
> Traceback (most recent call last):
>   File "flaskr.py", line 5, in <module>
>     import sqlite3
>   File "/usr/local/lib/python3.4/sqlite3/__init__.py", line 23, in
>   <module>
>     from sqlite3.dbapi2 import *
>   File "/usr/local/lib/python3.4/sqlite3/dbapi2.py", line 26, in <module>
>     from _sqlite3 import *
> ImportError: No module named '_sqlite3'
> 
> 
> I'm running this code in a virtualenv using pyvenv.
> 
> pip list (inside venv):
> Flask (0.10.1)
> itsdangerous (0.24)
> Jinja2 (2.7.3)
> MarkupSafe (0.23)
> pip (1.5.6)
> requests (2.4.1)
> setuptools (5.8)
> Werkzeug (0.9.6)
> 
> Using Python 3.4.1

But not the one provided by the distribution, I presume? When you compiled 
your Python, did you not get a message like

[...]
Python build finished successfully!
The necessary bits to build these optional modules were not found:
_bz2                  _curses               _curses_panel      
_dbm                  _gdbm                 _lzma              
_sqlite3              _ssl                  _tkinter           
readline              zlib                                     
To find the necessary bits, look in setup.py in detect_modules() for the 
module's name.
[...]

?
 
> The code is question is an example code from Flask doc, here:
> http://flask.pocoo.org/docs/0.10/tutorial/dbinit/#tutorial-dbinit
> 
> I already installed 'libsqlite3-dev' (apt-get). 

So after

$ sudo apt-get install libsqlite3-dev

Did you invoke

$ ./configure
$ make

again? The output should have changed slightly:

[...]
Python build finished successfully!
The necessary bits to build these optional modules were not found:
_bz2                  _curses               _curses_panel      
_dbm                  _gdbm                 _lzma              
_ssl                  _tkinter              readline           
zlib                                                           
[...]

> I don't knwo what to do!

Btw, I think this is off-topic for the tutor mailing list which is supposed 
to help with basic usage of Python.