PyQt5 定时输出日志到指定组件

• untitled.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'untitled.ui'
#
# Created by: PyQt5 UI code generator 5.15.9
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(1073, 706)
        self.verticalLayout = QtWidgets.QVBoxLayout(Form)
        self.verticalLayout.setObjectName("verticalLayout")
        self.pushButton = QtWidgets.QPushButton(Form)
        self.pushButton.setMinimumSize(QtCore.QSize(0, 50))
        self.pushButton.setObjectName("pushButton")
        self.verticalLayout.addWidget(self.pushButton)
        spacerItem = QtWidgets.QSpacerItem(20, 310, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
        self.verticalLayout.addItem(spacerItem)
        self.textEdit = QtWidgets.QTextEdit(Form)
        self.textEdit.setObjectName("textEdit")
        self.verticalLayout.addWidget(self.textEdit)

        self.retranslateUi(Form)
        self.pushButton.clicked.connect(Form.start) # type: ignore
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.pushButton.setText(_translate("Form", "开始"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    Form = QtWidgets.QWidget()
    ui = Ui_Form()
    ui.setupUi(Form)
    Form.show()
    sys.exit(app.exec_())

• main.py

#!/usr/bin/env python
# -*- coding:utf-8 -*-
# @Time：2023/7/20 9:25
# @Software：PyCharm
__author__ = "JentZhang"

import sys
import datetime
from PyQt5.QtWidgets import QWidget, QApplication
from PyQt5.QtCore import QTimer

from untitled import Ui_Form


class Main(QWidget, Ui_Form):
    def __init__(self):
        super().__init__()

        self.setupUi(self)
        self.timer = QTimer(self)
        self.timer.setInterval(1000)
        self.timer.timeout.connect(self.add_text)

        self.show()

    def start(self):
        self.timer.start()

    def add_text(self):
        self.textEdit.append(datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S"))


if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Main()
    sys.exit(app.exec_())

• 效果
  

每隔一秒将当前时间添加到textEdit组件中