一段时间后终止Python脚本

问题描述 投票:1回答:1

我的代码每2秒捕获一次图像。但问题是它无休止地运行。我需要脚本在一段时间内终止或关闭(即在50秒后终止或关闭)。我尝试使用sleep()但怀疑不会终止整个脚本或关闭它,它只是让脚本进入睡眠状态!希望有人可以帮助我在一段时间后终止脚本!

我的剧本:

import cv2
import numpy
import time

capture = cv2.VideoCapture(0)
capture.set(3, 640)
capture.set(4, 480)
img_counter = 0
frame_set = []
start_time = time.time()

while True:
    ret, frame = capture.read()
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    cv2.imshow('frame', gray)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break
    if time.time() - start_time >= 2:
        img_name = "FaceFrame{}.jpg".format(img_counter)
        cv2.imwrite(img_name, frame)
        print("{} written!".format(img_counter))
        start_time = time.time()
    img_counter += 1
python opencv time image-capture
1个回答
2
投票
actual_start_time = time.clock()
start_time = time.time()
while ((time.clock() - actual_start_time) < 50):
    #do stuff

或者:

actual_start_time = time.clock()
start_time = time.time()
while True:
    #do stuff
    if (time.clock() - actual_start_time) > 50):
        break
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