仅在Keyboardinterrutps之后累积回溯

Question

这是我的代码：

import autopy
import time
import math
width, height = 400, 400
a, b = 200, 200
r = 150
def drawCicle():
    for x in range(0, 3):
        for angle in range(0, 360, 1):
            x = r * math.sin(math.radians(angle)) + a
            y = r * math.cos(math.radians(angle)) + b
            autopy.mouse.move(int(x),int(y))
            time.sleep(0.002)
def mouseMove():
    counter = 0
    while counter < 4:
        drawCicle()
        counter += 1
    else:
        print('Drawing ' + str(counter) + ' circles')
        print('moving once more in 10 seconds...')
        counter = 0
        time.sleep(10)
        mouseMove()

if __name__ == "__main__":
    mouseMove()

奇怪的是，代码运行得很好。 只有在使用KeyboardInterrupt中断循环后，我才会获得回溯，这样从每个循环中溢出累积的回溯，如下所示：

Traceback (most recent call last):
  File "test.py", line 27, in <module>
    mouseMove()
  File "test.py", line 24, in mouseMove
    mouseMove()
  File "test.py", line 24, in mouseMove
    mouseMove()
  File "test.py", line 24, in mouseMove
    mouseMove()
  File "test.py", line 23, in mouseMove
    time.sleep(10)
KeyboardInterrupt

仅当我手动破坏代码时，这种情况才会发生，任何人都可以阐明我所忽略的最佳实践吗？

Answer 1

如果要立即查看打印语句的输出，请使用flush=True 。

输出是否被缓冲通常由file决定，但是如果flush关键字参数为true，则将强制刷新流。

def mouseMove():
    counter = 0
    while counter < 4:
        drawCicle()
        counter += 1
    else:
        print('Drawing ' + str(counter) + ' circles', flush=True)
        print('moving once more in 10 seconds...', flush=True)
        counter = 0
        time.sleep(10)
        mouseMove()

仅当您退出程序并出现异常时，才打印异常回溯。