AI代码解释 importsqlite3 # Step1:Import the necessary modules # Step2:Establish a connection to thein-memory database connection=sqlite3.connect(':memory:')# Step3:Perform database operations cursor=connection.cursor()# Create a table cursor.execute('''CREATE TABLE employees ( id INTEGER PRIMARY...
fetchmany(2) # Print the rows for row in rows: print(row) # Close the cursor and the database connection c.close() conn.close() 在上面的示例中,我们使用execute()方法执行SQL语句来查询customers表格中的所有数据。然后,我们使用fetchmany()方法获取前两行数据,并将它们存储在rows变量中。最后,我们...
frompysqlcipher3importdbapi2assqlite# 创建加密的SQLite数据库defcreate_encrypted_db(db_name,password):connection=sqlite.connect(db_name)connection.execute(f"PRAGMA key='{password}'")connection.execute("CREATE TABLE test (id INTEGER PRIMARY KEY, value TEXT)")connection.execute("INSERT INTO test (va...
File"<pyshell#8>", line1,in<module>sqlite3.connect(dbname)#函数,连接到数据库,返回connect对象 NameError: name'dbname'isnot defined>>>dir(sqlite3)#列出sqlite3模块中的常量、函数和对象 ['Binary','Cache','Connection','Cursor','DataError','DatabaseError','Date','DateFromTicks','Error','In...
database: 数据库文件的路径,或“:memory:” ,后者表示在RAM中创建临时数据库。 timeout: 指定连接在引发异常之前等待锁定消失的时间,默认为5.0(秒) 有了connection对象,就能创建游标对象了,即cursor对象,如下: connection.cursor([cursorClass]) function: 创建一个游标,返回游标对象,该游标将在Python的整个数据库...
SQLite 与前面所说的两个数据库不同。首先Python 已经将相应的驱动模块作为了标准库的一部分，只要是你安装了 Python，就可以使用；再者它可以类似于操作文件那样来操作 SQLite 数据库文件。还有一点，SQLite 源代码不受版权限制。建立连接 SQLite 也是一个关系型数据库，所以 SQL 可以直接在里面使用。由于 SQLite 的...
Create a database connection and cursor to execute queries. import sqlite3 conn = sqlite3.connect('my_data.db') c = conn.cursor() Execute a query that'll create auserstable withuser_idandusernamecolumns. c.execute('''CREATE TABLE users (user_id int, username text)''') ...
$chmod +x sqlite.py $./sqlite.py Open database successfully 创建表下面的 Python 代码段将用于在先前创建的数据库中创建一个表:实例 #!/usr/bin/python import sqlite3 conn = sqlite3.connect('test.db') print ("数据库打开成功") c = conn.cursor() c.execute('''CREATE TABLE COMPANY (ID ...
/usr/bin/python import sqlite3 conn = sqlite3.connect('test.db') c = conn.cursor() print "Opened database successfully" cursor = c.execute("SELECT id, name, address, salary from COMPANY") for row in cursor: print "ID = ", row[0]...
To be able to interact with a SQLite database using Python, you would need the sqlite3 module which comes with the Anaconda distribution. Now, you will connect to the database that you created using the connect() method provided by sqlite3. This returns a Connection object. Supply the ...