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Code Issues Projects Releases Packages Wiki Activity Actions 11

gh-69093: Add indexing and slicing support to sqlite3.Blob (#91599)

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Authored-by: Aviv Palivoda <palaviv@gmail.com>
Co-authored-by: Erlend E. Aasland <erlend.aasland@innova.no>
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Erlend Egeberg Aasland 2022-04-22 03:45:16 +02:00 • committed by GitHub
parent 1317b70f89
commit 29afb7d2ef
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5 changed files with 349 additions and 16 deletions
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11
Doc/includes/sqlite3/blob.py
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@ -2,15 +2,18 @@ import sqlite3
con = sqlite3.connect(":memory:")
con.execute("create table test(blob_col blob)")
con.execute("insert into test(blob_col) values (zeroblob(10))")
con.execute("insert into test(blob_col) values (zeroblob(13))")
# 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")
blob.write(b"hello, ")
blob.write(b"world.")
# Modify the first and last bytes of our blob
blob[0] = b"H"
blob[-1] = b"!"
# Read the contents of our blob
with con.blobopen("test", "blob_col", 1) as blob:
greeting = blob.read()
print(greeting) # outputs "b'HelloWorld'"
print(greeting) # outputs "b'Hello, world!'"