Mercurial > cpython-lru_cache-weakref

annotate Doc/includes/sqlite3/executemany_2.py @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 9eb77d455be1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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Georg Brandl <georg@python.org>
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1 import sqlite3
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9eb77d455be1 Issue #13491: Fix many errors in sqlite3 documentation
Petri Lehtinen <petri@digip.org>
parents: 42604
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2 import string
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3
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4 def char_generator():
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9eb77d455be1 Issue #13491: Fix many errors in sqlite3 documentation
Petri Lehtinen <petri@digip.org>
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5 for c in string.ascii_lowercase:
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6 yield (c,)
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7
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8 con = sqlite3.connect(":memory:")
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9 cur = con.cursor()
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10 cur.execute("create table characters(c)")
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11
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12 cur.executemany("insert into characters(c) values (?)", char_generator())
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14 cur.execute("select c from characters")
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15 print(cur.fetchall())