python - 为什么我的 2 函数在第一个和第二个循环中没有被调用？

问题描述

我正在研究这个 pyqt5 UI 设计，我需要遍历 id 并检查 True/false 并相应地更新窗口。当我运行此代码并提供 3 个 id 时，它仅在最后一个 id 期间调用 getsensor 函数和 paintevent 函数。当 id 为 id_123 和 id_234 时，为什么在第 2 次循环期间没有调用函数 getsensor 和 paintevent。

from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel
from PyQt5.QtCore import QTimer, Qt
import sys
from PyQt5.QtGui import QPainter, QBrush, QPen, QColor
import time

class MainWindow(QMainWindow):
    def __init__(self,id_, parent=None):
        super(MainWindow, self).__init__(parent)
        # counter
        self.correct = 0
        self.incorrect = 0
        self.id_ = id_
        self.setStyleSheet("QLabel {font: 8pt Arial}")
        self.qLbl = QLabel("Not yet initialized")
        self.setCentralWidget(self.qLbl)
        self.qTimer = QTimer()
        self.qTimer.setInterval(1000)
        self.qTimer.singleShot(1000, self.getSensorValue)
        # self.qTimer.timeout.connect(self.getSensorValue)
        self.qTimer.setSingleShot(True)
        self.qTimer.start()
        self.color = QColor()
        self.repaint()
        self.update()

    def getSensorValue(self):

        result = (bool(random.getrandbits(1)))
        print("Result",self.id_,result)
        if result == True:
            self.correct = self.correct + 1
        else:
            self.incorrect = self.incorrect + 1
        # self.qLbl.setText("{} {}".format(id_, result))
        self.qLbl.setText(" {} {} {}".format(str(self.id_), self.correct, self.incorrect))
        # self.color = QColor("green") if result==True else QColor("red")
        if result == True:
            self.color =QColor("green")
        elif result == False:
            self.color  = QColor("red")
        else:
            self.color =QColor("black")
        self.repaint()
        self.update()
            # return result

    def paintEvent(self, event):
        print("test1",self.id_)
        if self.color.isValid():
            painter = QPainter(self)
            painter.setPen(QPen(self.color, 5, Qt.SolidLine))
            painter.setBrush(QBrush(self.color, Qt.SolidPattern))
            painter.drawRect(40, 40, 400, 200)
#

qApp = QApplication(sys.argv)


ids=["id_123","id_234","id_345"]
for i in ids:
    import random

    qWin = MainWindow(id_=i)
    # qWin.getSensorValue()
    time.sleep(1)
    qWin.setGeometry(100, 100, 1000, 1000)
    qWin.show()
sys.exit(qApp.exec_())


# run application

标签： pythonpython-3.xpyqt5

python - 为什么我的 2 函数在第一个和第二个循环中没有被调用？

问题描述

解决方案

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