创建学生库

题目说明

import sqlite3
conn = sqlite3.connect('        ①        ')
cursor = conn.cursor()
cursor.execute('''        ②         students_table(id INTEGER PRIMARY KEY AUTOINCREMENT,name TEXT,age INTEGER,grade TEXT)''')
students = [ ('Alice', 17, '10th'), ('Bob', 18, '11th'), ('Charlie', 16, '10th'),  ('David', 19, '12th'),('Eve', 17, '11th')]
cursor.executemany('''INSERT INTO students_table (name, age, grade) VALUES (?, ?, ?)''', students)
conn.commit()
cursor.execute('SELECT * FROM students_table         ③        ')
print("年龄大于18岁的学生:")
print(cursor.        ④        )
cursor.execute('UPDATE students_table SET age = age + 1 WHERE name = "Alice"')
cursor.execute('DELETE FROM students_table WHERE name = "Bob"')
conn.commit()
conn.close()

评分标准

（1）students.db 或等效答案；（2分） （2）CREATE TABLE 或等效答案； （2分） （3）WHERE age > 18 或等效答案；（3分） （4）fetchall() 或等效答案。（3分）