8000 gh-61162: Clarify sqlite3 connection context manager docs by erlend-aasland · Pull Request #93890 · python/cpython · GitHub
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gh-61162: Clarify sqlite3 connection context manager docs #93890

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Merged
merged 16 commits into from
Jun 19, 2022
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gh-61162: Clarify sqlite3 connection context manager docs #93890

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672ce97
gh-61162: Clarify sqlite3 connection context manager docs
erlend-aasland Jun 16, 2022
61b31f9
Update Doc/library/sqlite3.rst
Jun 16, 2022
2434ba2
Address Adam's review: focus on the happy path
erlend-aasland Jun 16, 2022
71f2f45
Remove the now obsolete note
erlend-aasland Jun 16, 2022
76319b7
Clarify?
erlend-aasland Jun 16, 2022
20a100a
Update sqlite3.rst
Jun 16, 2022
28c435f
Add context manager anchor
Jun 16, 2022
6baac81
Use anchor in NEWS entry
Jun 16, 2022
8808fb9
Update Doc/library/sqlite3.rst
Jun 16, 2022
7237399
Add connection class link
Jun 16, 2022
6218dba
Make it more concise
Jun 16, 2022
32beb9f
Adjust wording and reflow for 79 chars
erlend-aasland Jun 17, 2022
a64fad4
Update Doc/library/sqlite3.rst
Jun 17, 2022
420c8ce
Object is singular
Jun 17, 2022
9fc3801
Reflow to 79 char limit
erlend-aasland Jun 17, 2022
b2ae22c
Finishing touch: Use neither...nor instead of does not...or
erlend-aasland Jun 19, 2022
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Clarify?
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@erlend-aasland
erlend-aasland committed Jun 16, 2022
commit 76319b7f143a2cc426d0c3f2fba2e467ed9f4b39
18 changes: 13 additions & 5 deletions Doc/library/sqlite3.rst
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Expand Up @@ -1434,13 +1434,21 @@ case-insensitively by name:
Using the connection as a context manager
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

With an open transaction, connection objects can be used as context managers
that automatically commit or rollback transactions.
If the body of the ``with`` statement finishes without exceptions,
Connection objects can be used as context managers that automatically commit or
rollback open transactions when leaving the body of the context manager.
If the body of the :keyword:`with` statement finishes without exceptions,
the transaction is committed.
If an exception is raised and not caught, the transaction is rolled back.
If this commit fails, the transaction is rolled back.
If the body of the ``with`` statement raise an exception which is not caught,
the transaction is rolled back.

If there is no open transaction, the context manager is a no-op.
If there is no open transaction upon leaving the body of the ``with`` statement,
the context manager is a no-op.

.. note::

The context manager does not implicitly open a new transaction.
The context manager does not close the connection.

.. literalinclude:: ../includes/sqlite3/ctx_manager.py

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