super(MyThread, self).__init__()
时间: 2024-06-14 15:07:54 浏览: 7
super(MyThread, self).__init__()是在Python中调用父类构造函数的一种方式。它用于在子类中调用父类的构造函数,以便继承父类的属性和方法。
在这个例子中,super(MyThread, self)表示调用MyThread类的父类的构造函数。通过调用父类的构造函数,子类可以继承父类的属性和方法,并且可以在子类的构造函数中添加额外的逻辑。
需要注意的是,super()函数是根据方法解析顺序(Method Resolution Order,MRO)来确定要调用的父类。MRO是一个确定方法调用顺序的算法,它基于类的继承关系来确定方法的查找顺序。
相关问题
使用QTimer对象代替QBasicTimer对象,修改程序class MyWindow(QWidget): def init(self): super().init() self.thread_list = [] self.color_photo_dir = os.path.join(os.getcwd(), "color_photos") self.depth_photo_dir = os.path.join(os.getcwd(), "depth_photos") self.image_thread = None self.saved_color_photos = 0 # 定义 saved_color_photos 属性 self.saved_depth_photos = 0 # 定义 saved_depth_photos 属性 self.init_ui() def init_ui(self): self.ui = uic.loadUi("C:/Users/wyt/Desktop/D405界面/intelrealsense1.ui") self.open_btn = self.ui.pushButton self.color_image_chose_btn = self.ui.pushButton_3 self.depth_image_chose_btn = self.ui.pushButton_4 self.open_btn.clicked.connect(self.open) self.color_image_chose_btn.clicked.connect(lambda: self.chose_dir(self.ui.lineEdit, "color")) self.depth_image_chose_btn.clicked.connect(lambda: self.chose_dir(self.ui.lineEdit_2, "depth")) def open(self): self.profile = self.pipeline.start(self.config) self.is_camera_opened = True self.label.setText('相机已打开') self.label.setStyleSheet('color:green') self.open_btn.setEnabled(False) self.close_btn.setEnabled(True) self.image_thread = ImageThread(self.pipeline, self.color_label, self.depth_label, self.interval, self.color_photo_dir, self.depth_photo_dir, self._dgl) self.image_thread.saved_color_photos_signal.connect(self.update_saved_color_photos_label) self.image_thread.saved_depth_photos_signal.connect(self.update_saved_depth_photos_label) self.image_thread.start() def chose_dir(self, line_edit, button_type): my_thread = MyThread(line_edit, button_type) my_thread.finished_signal.connect(self.update_line_edit) self.thread_list.append(my_thread) my_thread.start()
以下是使用QTimer对象代替QBasicTimer对象的修改后的代码:
```python
from PyQt5.QtCore import QTimer
class MyWindow(QWidget):
def __init__(self):
super().__init__()
self.thread_list = []
self.color_photo_dir = os.path.join(os.getcwd(), "color_photos")
self.depth_photo_dir = os.path.join(os.getcwd(), "depth_photos")
self.image_thread = None
self.saved_color_photos = 0
self.saved_depth_photos = 0
self.init_ui()
def init_ui(self):
self.ui = uic.loadUi("C:/Users/wyt/Desktop/D405界面/intelrealsense1.ui")
self.open_btn = self.ui.pushButton
self.color_image_chose_btn = self.ui.pushButton_3
self.depth_image_chose_btn = self.ui.pushButton_4
self.open_btn.clicked.connect(self.open)
self.color_image_chose_btn.clicked.connect(lambda: self.chose_dir(self.ui.lineEdit, "color"))
self.depth_image_chose_btn.clicked.connect(lambda: self.chose_dir(self.ui.lineEdit_2, "depth"))
def open(self):
self.profile = self.pipeline.start(self.config)
self.is_camera_opened = True
self.label.setText('相机已打开')
self.label.setStyleSheet('color:green')
self.open_btn.setEnabled(False)
self.close_btn.setEnabled(True)
self.image_thread = ImageThread(self.pipeline, self.color_label, self.depth_label, self.interval, self.color_photo_dir, self.depth_photo_dir, self._dgl)
self.image_thread.saved_color_photos_signal.connect(self.update_saved_color_photos_label)
self.image_thread.saved_depth_photos_signal.connect(self.update_saved_depth_photos_label)
self.image_thread.start()
self.timer = QTimer(self) # 创建QTimer对象
self.timer.timeout.connect(self.update) # 连接timeout信号与槽函数
self.timer.start(100) # 启动定时器,间隔为100ms
def update(self):
# 检查所有的线程是否已完成,并从线程列表中移除已完成的线程
for thread in self.thread_list:
if not thread.isRunning():
self.thread_list.remove(thread)
def chose_dir(self, line_edit, button_type):
my_thread = MyThread(line_edit, button_type)
my_thread.finished_signal.connect(self.update_line_edit)
self.thread_list.append(my_thread)
my_thread.start()
def update_saved_color_photos_label(self, count):
self.saved_color_photos = count
self.ui.label_5.setText(str(self.saved_color_photos))
def update_saved_depth_photos_label(self, count):
self.saved_depth_photos = count
self.ui.label_6.setText(str(self.saved_depth_photos))
```
from PyQt5.QtCore import pyqtSignal, QThread import time from PyQt5.QtWidgets import QApplication class MyThread(QThread): signal_msg = pyqtSignal() def __init__(self): super().__init__() # self.signal_msg.connect(fd) self.signal_msg.connect(self.work) def run(self): self.signal_msg.emit() print("狗") def work(self): print(f"\ns") if __name__ == '__main__': print("a") my_thread = MyThread() my_thread.start() time.sleep(1) 为什么没有输出s
这是因为 `signal_msg` 信号在连接到 `work` 槽函数之前就被发射了,所以 `work` 槽函数没有被执行。你可以把 `self.signal_msg.connect(self.work)` 放在 `MyThread` 类的构造函数中,或者使用 `@pyqtSlot()` 装饰器来标记 `work` 方法作为槽函数。此外,为了避免使用 `time.sleep()` 阻塞主线程,你应该使用 `QApplication.processEvents()` 来处理事件循环。修改后的代码如下:
```
from PyQt5.QtCore import pyqtSignal, QThread, pyqtSlot
from PyQt5.QtWidgets import QApplication
class MyThread(QThread):
signal_msg = pyqtSignal()
def __init__(self):
super().__init__()
self.signal_msg.connect(self.work)
def run(self):
self.signal_msg.emit()
print("狗")
@pyqtSlot()
def work(self):
print(f"\ns")
if __name__ == '__main__':
print("a")
app = QApplication([])
my_thread = MyThread()
my_thread.start()
app.processEvents()
```