加不加那一个等号，差几行

把两条只差一个等号的查询各跑一次，输出两个行数（用 / 隔开）。

import sqlite3
db = sqlite3.connect(":memory:")
db.execute("CREATE TABLE goods (id INTEGER, name TEXT, cat TEXT, price INTEGER, stock INTEGER)")
db.executemany("INSERT INTO goods VALUES (?,?,?,?,?)", [
    (1, "绿茶", "饮料", 6, 12),   (2, "红茶", "饮料", 6, 0),
    (3, "苏打水", "饮料", 5, None), (4, "薯片", "零食", 8, 7),
    (5, "海苔", "零食", 12, 3),   (6, "巧克力", "零食", 15, None),
    (7, "铅笔", "文具", 2, 40),   (8, "笔记本", "文具", 9, 5),
    (9, "橡皮", "文具", 3, 0),    (10, "冰红茶", "饮料", 4, 20)])
a = db.execute("SELECT * FROM goods WHERE price > 6").fetchall()
b = db.execute("SELECT * FROM goods WHERE price >= 6").fetchall()
print(str(len(a)) + "/" + str(len(b)))