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Presentations/Ecoanova/Introduccion a Python 3/Ejemplos/db.py

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Python

import sqlite3
# "Connect" to a database
conn = sqlite3.connect('example.db')
# Get a cursor to operate on the database
c = conn.cursor()
# Create table
c.execute('''CREATE TABLE stocks
(date text, trans text, symbol text, qty real, price real)''')
# Insert a row of data
c.execute("INSERT INTO stocks VALUES ('2006-01-05','BUY','RHAT',100,35.14)")
# Save (commit) the changes
conn.commit()
# Select
t = ('RHAT',)
c.execute('SELECT * FROM stocks WHERE symbol=?', t)
print(c.fetchone())
# Larger example that inserts many records at a time
purchases = [('2006-03-28', 'BUY', 'IBM', 1000, 45.00),
('2006-04-05', 'BUY', 'MSFT', 1000, 72.00),
('2006-04-06', 'SELL', 'IBM', 500, 53.00),
]
c.executemany('INSERT INTO stocks VALUES (?,?,?,?,?)', purchases)
for row in c.execute('SELECT * FROM stocks ORDER BY price'):
print(row)
# We can also close the connection if we are done with it.
# Just be sure any changes have been committed or they will be lost.
conn.close()