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gh-69093: Add context manager support to sqlite3.Blob by erlend-aasland · Pull Request #91562 · python/cpython · GitHub
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gh-69093: Add context manager support to sqlite3.Blob #91562

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Merged
JelleZijlstra merged 3 commits into from
Apr 16, 2022
Merged

gh-69093: Add context manager support to sqlite3.Blob #91562

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b6cd651
gh-69093: Add context manager support to sqlite3.Blob
Apr 13, 2022
ca093f3
Try to consolidate examples and reword docs
Apr 15, 2022
bce9c9f
Simplify and relocate example
Apr 15, 2022
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Simplify and relocate example
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Erlend E. Aasland
Erlend E. Aasland committed Apr 15, 2022
commit bce9c9fbda257021f464a2ce5e214cf40d66e223
15 changes: 8 additions & 7 deletions Doc/includes/sqlite3/blob.py
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Expand Up @@ -4,12 +4,13 @@
con.execute("create table test(blob_col blob)")
con.execute("insert into test(blob_col) values (zeroblob(10))")

blob = con.blobopen("test", "blob_col", 1)
blob.write(b"Hello")
blob.write(b"World")
blob.seek(0)
print(blob.read()) # will print b"HelloWorld"
blob.close()
# Write to our blob, using two write operations:
with con.blobopen("test", "blob_col", 1) as blob:
blob.write(b"Hello")
blob.write(b"World")

# Read the contents of our blob
with con.blobopen("test", "blob_col", 1) as blob:
blob.write(b"UpdateBlob")
greeting = blob.read()

print(greeting) # outputs "b'HelloWorld'"
6 changes: 2 additions & 4 deletions Doc/library/sqlite3.rst
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Expand Up @@ -1118,6 +1118,8 @@ Blob Objects
Use the :class:`Blob` as a :term:`context manager` to ensure that the blob
handle is closed after use.

.. literalinclude:: ../includes/sqlite3/blob.py

.. method:: close()

Close the blob.
Expand Down Expand Up @@ -1152,10 +1154,6 @@ Blob Objects
current position) and :data:`os.SEEK_END` (seek relative to the blob’s
end).

:class:`Blob` example:

.. literalinclude:: ../includes/sqlite3/blob.py


.. _sqlite3-types:

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