写一个生成20以内的加减的Python程序
时间: 2024-04-25 12:12:00 浏览: 63
import random
# 生成随机的加减式
def generate_expression():
a = random.randint(0, 20)
b = random.randint(0, 20)
operator = random.choice(['+', '-'])
if operator == '+':
result = a + b
else:
result = a - b
return f"{a} {operator} {b} = ", result
# 主程序
for i in range(10):
expression, answer = generate_expression()
print(f"{expression} ?")
user_answer = int(input())
if user_answer == answer:
print("回答正确!")
else:
print(f"回答错误,正确答案是:{answer}")
相关问题
python实现生产者消费者多线程程序,三个生产者负责随机生成100以内自然数并随机加减乘除,然后把算式发给消费者,消费者计算并打印结果
以下是一个简单的多线程生产者-消费者模型的实现,其中有三个生产者负责随机生成100以内的自然数并随机加减乘除,然后把算式发给消费者,消费者计算并打印结果。代码如下:
```python
import threading
import queue
import random
# 生产者类
class Producer(threading.Thread):
def __init__(self, task_queue):
super(Producer, self).__init__()
self.task_queue = task_queue
def run(self):
for i in range(100):
a = random.randint(1, 100)
b = random.randint(1, 100)
operator = random.choice(['+', '-', '*', '/'])
task = f"{a} {operator} {b}"
self.task_queue.put(task)
print("生产者任务已完成")
# 消费者类
class Consumer(threading.Thread):
def __init__(self, task_queue):
super(Consumer, self).__init__()
self.task_queue = task_queue
def run(self):
while True:
task = self.task_queue.get()
if task == None:
break
result = eval(task)
print(f"{task} = {result}")
print("消费者任务已完成")
if __name__ == "__main__":
task_queue = queue.Queue()
# 创建三个生产者
producers = [Producer(task_queue) for i in range(3)]
# 创建一个消费者
consumer = Consumer(task_queue)
# 启动所有生产者和消费者线程
for p in producers:
p.start()
consumer.start()
# 等待所有生产者线程完成
for p in producers:
p.join()
# 将None加入队列,通知消费者线程退出
task_queue.put(None)
# 等待消费者线程完成
consumer.join()
print("所有任务已完成")
```
运行结果如下:
```
13 + 27 = 40
54 + 48 = 102
57 / 14 = 4.071428571428571
77 + 44 = 121
36 - 80 = -44
...
消费者任务已完成
所有任务已完成
```
用python编写一个让孩子快速计算100以内加减乘除的游戏,一共10道题,每一题只出现1秒
A:以下是一个简单的代码示例:
```python
import random
import time
def generate_question():
operator = random.choice(['+', '-', '*', '/'])
num1 = random.randint(1, 100)
num2 = random.randint(1, 100)
if operator == '+':
answer = num1 + num2
elif operator == '-':
answer = num1 - num2
elif operator == '*':
answer = num1 * num2
else:
answer = num1 // num2
question = f"{num1} {operator} {num2} = "
return question, answer
score = 0
for i in range(10):
question, answer = generate_question()
print(question, end='', flush=True)
time.sleep(1)
try:
user_answer = int(input())
except ValueError:
print("Invalid input!")
continue
if user_answer == answer:
print("Correct!")
score += 1
else:
print(f"Incorrect! The correct answer is {answer}")
print(f"Your final score is {score}")
```
运行此程序将生成一系列随机的加减乘除问题,并在每个问题出现时暂停一秒钟,等待玩家输入答案。程序将捕获无效输入并跳过该问题,最后打印玩家的最终得分。
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