update

#code 1
prc = quoted["price"] * number
            rows = db.execute("SELECT* FROM users WHERE id = :id", session["user_id"])
            if prc <= rows[0]["cash"]:

#code 2
prc = quoted["price"] * number
            rows = db.execute("SELECT cash FROM users WHERE id = :id", session["user_id"])
            if prc <= rows[0]: