36 lines
776 B
Python
36 lines
776 B
Python
#!/usr/bin/env python
|
|
# -*- encoding: utf-8 -*-
|
|
"""
|
|
Topic: 关系型数据库处理
|
|
Desc :
|
|
"""
|
|
import sqlite3
|
|
import datetime.time
|
|
|
|
|
|
def db_operation():
|
|
db = sqlite3.connect('database.db')
|
|
c = db.cursor()
|
|
c.execute('create table portfolio (symbol text, shares integer, price real)')
|
|
db.commit()
|
|
|
|
stocks = [
|
|
('GOOG', 100, 490.1),
|
|
('AAPL', 50, 545.75),
|
|
('FB', 150, 7.45),
|
|
('HPQ', 75, 33.2),
|
|
]
|
|
c.executemany('insert into portfolio values (?,?,?)', stocks)
|
|
db.commit()
|
|
|
|
for row in db.execute('select * from portfolio'):
|
|
print(row)
|
|
|
|
min_price = 12
|
|
for row in db.execute('select * from portfolio where price >= ?', (min_price,)):
|
|
print(row)
|
|
|
|
if __name__ == '__main__':
|
|
db_operation()
|
|
|