`Doc/library/sqlite3.rst` has multiple doctest warnings

[sobolevn]

Bug report

Link: https://github.com/python/cpython/actions/runs/6753865568/job/18360794210?pr=111723#step:8:82

Document: library/sqlite3
-------------------------
Exception ignored in: <sqlite3.Connection object at 0x7f1684307130>
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/functools.py", line 55, in update_wrapper
    pass
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7f1684307130>
Exception ignored in: <sqlite3.Connection object at 0x7f1684307ac0>
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/functools.py", line 55, in update_wrapper
    pass
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7f1684307ac0>
Exception ignored in: <sqlite3.Connection object at 0x7f16891eb680>
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/functools.py", line 55, in update_wrapper
    pass
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7f16891eb680>
Exception ignored in: <sqlite3.Connection object at 0x7f16891eb240>
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/functools.py", line 55, in update_wrapper
    pass
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7f16891eb240>
Exception ignored in: <sqlite3.Connection object at 0x7f16891ea9c0>
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/functools.py", line 55, in update_wrapper
    pass
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7f16891ea9c0>
Exception ignored in: <sqlite3.Connection object at 0x7f16891eb350>
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/functools.py", line 55, in update_wrapper
    pass
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7f16891eb350>
Exception ignored in: <sqlite3.Connection object at 0x7f16891eb130>
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/functools.py", line 55, in update_wrapper
    pass
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7f16891eb130>
Exception ignored in: <sqlite3.Connection object at 0x7f16891ea8b0>
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/functools.py", line 55, in update_wrapper
    pass
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7f16891ea8b0>
Exception ignored in: <sqlite3.Connection object at 0x7f16891e9bf0>
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/functools.py", line 55, in update_wrapper
    pass
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7f16891e9bf0>
4 items passed all tests:
  71 tests in default
   3 tests in sqlite3.cursor
   3 tests in sqlite3.limits
   8 tests in sqlite3.trace
85 tests in 4 items.
85 passed and 0 failed.
Test passed.
Exception ignored in sys.unraisablehook: <function debug at 0x7f167bb73c50>
Traceback (most recent call last):
  File "<doctest sqlite3.trace[4]>", line 2, in debug
AttributeError: 'sqlite3.Connection' object has no attribute '__name__'
Exception ignored in sys.unraisablehook: <function debug at 0x7f167bb73c50>
Traceback (most recent call last):
  File "<doctest sqlite3.trace[4]>", line 2, in debug
AttributeError: 'sqlite3.Connection' object has no attribute '__name__'
Exception ignored in sys.unraisablehook: <function debug at 0x7f167bb73c50>
Traceback (most recent call last):
  File "<doctest sqlite3.trace[4]>", line 2, in debug
AttributeError: 'sqlite3.Connection' object has no attribute '__name__'
Exception ignored in sys.unraisablehook: <function debug at 0x7f167bb73c50>
Traceback (most recent call last):
  File "<doctest sqlite3.trace[4]>", line 2, in debug
AttributeError: 'sqlite3.Connection' object has no attribute '__name__'
Exception ignored in sys.unraisablehook: <function debug at 0x7f167bb73c50>
Traceback (most recent call last):
  File "<doctest sqlite3.trace[4]>", line 2, in debug
AttributeError: 'sqlite3.Connection' object has no attribute '__name__'

I will examine possible fixes and send a PR.

Linked PRs

• gh-111726: Explicitly close database connections in sqlite3 doctests #111730
• [3.12] gh-111726: Cleanup test files after running sqlite3 doctest (GH-117604) #117622
• gh-111726: Remove some unneeded doctests from sqlite3 docs #117623
• [3.12] gh-111726: Remove some doctests from sqlite3 docs (GH-117623) #117625
• [3.12] gh-111726: Explicitly close database connections in sqlite3 doctests (GH-111730) #117630