python四则运算例题

以下是一个Python的四则运算例题：

opr = ['＋', '－', '×', '÷']
fh = random.randint(0, 4)
if fh == 0:
    rjg = newfra()
    jg = input()
    if jg == '0000':
        break;
    sr = Fraction(jg)
    if sr == rjg:
        print('right')
    else:
        print('error. the Tight answer is', rjg)
else:
    rjg = newint()
    jg = input()
    if jg == '0000':
        break;
    sr = int(jg)
    if sr == rjg:
        print('right')
    else:
        print('error. the Tight answer is', rjg)

这个例题是在Python中进行四则运算的一个示例。程序会随机选择加法、减法、乘法或除法，并生成相应的题目。用户需要输入答案，如果答案正确，则输出"right"，否则输出"error"。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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