使用Python编写的随机困难示例挖掘器生成器

下面是一个使用Python编写的随机困显实例生成器的示例代码：

import random
import string

def generate_captcha():
    # 随机生成一个困显实例
    operators = ['+', '-', '*']
    operator = random.choice(operators)
    number1 = random.randint(1, 10)
    number2 = random.randint(1, 10)
    
    expression = str(number1) + " " + operator + " " + str(number2)
    
    # 计算困显实例的答案
    if operator == '+':
        answer = number1 + number2
    elif operator == '-':
        answer = number1 - number2
    else:
        answer = number1 * number2
    
    # 返回困显实例和答案
    return expression, answer

def generate_example(num_examples):
    # 生成指定数量的困显实例例子
    examples = []
    for _ in range(num_examples):
        expression, answer = generate_captcha()
        examples.append((expression, answer))
    
    return examples

# 生成10个困显实例例子
examples = generate_example(10)

# 输出例子
for i, example in enumerate(examples):
    expression, answer = example
    print(f"Example {i+1}:")
    print(f"Expression: {expression}")
    print(f"Answer: {answer}")
    print()

运行上述代码会生成10个随机的困显实例例子，并输出结果。示例输出如下：

Example 1:
Expression: 10 * 3
Answer: 30

Example 2:
Expression: 8 - 4
Answer: 4

Example 3:
Expression: 7 + 3
Answer: 10

Example 4:
Expression: 2 * 5
Answer: 10

Example 5:
Expression: 4 - 2
Answer: 2

Example 6:
Expression: 4 + 10
Answer: 14

Example 7:
Expression: 1 - 4
Answer: -3

Example 8:
Expression: 9 - 8
Answer: 1

Example 9:
Expression: 1 + 3
Answer: 4

Example 10:
Expression: 2 * 1
Answer: 2

以上示例代码通过随机选择操作符和两个数字生成困显实例，然后计算出对应的答案，并输出结果。你可以根据需要调整数字的范围和操作符的种类。