SQLite3 DB backend should remove dependency on sqlite3 module

[Gatzy118]

Given Django tries to use pysqlite2 by default anyway, would it be reasonably to change in django.db.backends.sqlite3.schema this:

   35     def quote_value(self, value):
   36         # The backend "mostly works" without this function and there are use
   37         # cases for compiling Python without the sqlite3 libraries (e.g.
   38         # security hardening).
   39         import sqlite3
   40         try:
   41             value = sqlite3.adapt(value)
   42         except sqlite3.ProgrammingError:
   43             pass
   44         # Manual emulation of SQLite parameter quoting
   45         if isinstance(value, type(True)):
...

Into this:

 41         try:
 42             import sqlite3
 43             value = sqlite3.adapt(value)
 44         except ImportError:
 45             pass
 46         except sqlite3.ProgrammingError:
 47             pass
 48         # Manual emulation of SQLite parameter quoting
 49         if isinstance(value, type(True)):
...

[Markus Holtermann]

Please don't mark a ticket as fixed until the respective patch has been committed. Thank you.

[Philip Liberato]

Sorry. Here's a link to the ​PR.

[Tim Graham <timograham@…>]

In 3630b49:

Fixed #26613 -- Made sqlite3 optional in SchemaEditor.quote_value().