Question

当我运行代码时，程序运行时没有错误，但在询问“班级号码”后留下空格。我无法说出错误。我还没有完成代码，所以只是想知道它是否有效，但它还没有能够达到目标。

user_name = input('Enter a name: ')

total_score = 0
x=0
while x<10:
    import random

    signs = ['+', '-', '*']
    sign = random.choice(signs)
    num1 = random.randint(1, 10)
    num2 = random.randint(1, 10)

    print(num1, sign, num2)

    answer = int(eval(str(num1) + sign + str(num2)))

    userAnswer= int(input("= "))

    if userAnswer != answer:
        print ("Incorrect. The right answer is {}.".format(answer))
    else:
        print('Correct')
        total_score = total_score +1 
    x=x+1

if total_score == 10:
    print('Wow',user_name,'!','All 10 of your answers were correct!')
else:
    print (total_score, 'out of 10 were correct!')

from datetime import datetime

now = datetime.now().strftime('%Y-%m-%d %H:%M')
class_number = int(input('Please enter your class number: '))

import sqlite3
if class_number in ['1','2','3']:

    conn = sqlite3.connect('class{}.db')
    c = conn.cursor()

    c.execute('''CREATE TABLE CLS1
             (Username, Score, Date)''')

    c.execute("INSERT INTO CLS1 VALUES (user_name, total_score, now)")

    conn.commit()

import sqlite3
if class_number in ['1','2','3']:

    conn = sqlite3.connect('class{}.db')
    print ("Opened database successfully");

    cursor = conn.execute("SELECT user_name,total_score, now from CLS1 ")
    for row in cursor:
       print ("user_name = ", row[0])
       print ("total_score = ", row[1])
       print ("date text = ", row[2], "\n")

    print ("Operation done successfully");
    conn.close()

Answer 1

您转换为int然后与列表中的字符串进行比较，以便if永远不会评估为True

class_number = int(input('Please enter your class number: '))

if class_number in ['1','2','3']:

删除int：

class_number =  input('Please enter your class number: ')

if class_number in ['1','2','3']:

您还应该使用范围而不是while循环：

import random
for _ in range(10)

你的sqlite的逻辑似乎有点偏离：

import sqlite3
import os

if class_number in ['1', '2', '3']:
    db = 'class{}.db'.format(class_number)
    query = """
         INSERT INTO ClS1    VALUES
              (?, ?, ?)
            """
    if not os.path.isfile(db):
        conn = sqlite3.connect(db)
        c = conn.cursor()
        c.execute('''CREATE TABLE CLS1  (USERNAME TEXT, SCORE INT, DATE TEXT);''')
        conn.execute(query, (user_name, total_score, now))
        conn.commit()

    else:
        conn = sqlite3.connect(db)
        print("Opened database successfully")
        conn.execute(query, (user_name, total_score, now))
        conn.commit()
        cursor = conn.execute("SELECT USERNAME, SCORE, DATE FROM CLS1 ")
        for row in cursor:
            print("user_name = ", row[0])
            print("total_score = ", row[1])
            print("date text = ", row[2], "\n")

        print("Operation done successfully")
        conn.close()

我的sqlite有什么问题？

1 个答案: