view Doc/includes/sqlite3/simple_tableprinter.py @ 87690:66c1c9f32567 default tip

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 9e1529bf0442
children
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import sqlite3

FIELD_MAX_WIDTH = 20
TABLE_NAME = 'people'
SELECT = 'select * from %s order by age, name_last' % TABLE_NAME

con = sqlite3.connect("mydb")

cur = con.cursor()
cur.execute(SELECT)

# Print a header.
for fieldDesc in cur.description:
    print(fieldDesc[0].ljust(FIELD_MAX_WIDTH), end=' ')
print() # Finish the header with a newline.
print('-' * 78)

# For each row, print the value of each field left-justified within
# the maximum possible width of that field.
fieldIndices = range(len(cur.description))
for row in cur:
    for fieldIndex in fieldIndices:
        fieldValue = str(row[fieldIndex])
        print(fieldValue.ljust(FIELD_MAX_WIDTH), end=' ')

    print() # Finish the row with a newline.