Question

如果我写入文本框的进程处于活动状态，我会编写此代码以弹出消息框。但是，如果我插入例如＆＃34; chrome.exe＆＃34;他弹出了很多消息框，因为在我的进程列表中有10个chrome.exe进程。与其他进程相同，如果只有一个进程，则只弹出一个进程。我怎样才能解决这个问题？我写的代码是：

import sys
from PyQt5 import QtCore
from PyQt5.QtWidgets import QMainWindow, QApplication, QPushButton, 
QLineEdit, QMessageBox
import psutil


class App(QMainWindow):

    def __init__(self):
        super().__init__()
        self.title = 'PyQt5 textbox - pythonspot.com'
        self.left = 10
        self.top = 10
        self.width = 400
        self.height = 140
        self.initUI()

    def initUI(self):
        self.setWindowTitle(self.title)
        self.setGeometry(self.left, self.top, self.width, self.height)

        # Create textbox
        self.textbox = QLineEdit(self)
        self.textbox.setGeometry(QtCore.QRect(30, 40, 161, 31))
        self.textbox.setObjectName("textEdit")

        # Create a button in the window
        self.button = QPushButton('Show text', self)
        self.button.move(20, 80)

        # connect button to function on_click
        self.button.clicked.connect(self.on_click)
        self.show()

    def on_click(self):
        textboxValue = self.textbox.text()
        for pid in psutil.pids():  # Controlla se il processo è attivo
            try:
                listapid = psutil.Process(pid)
                if listapid.name() == textboxValue:
                    QMessageBox.about(self, 'Process', 'Processo trovato')
                    self.textbox.setText("")
            except:
                pass

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

Answer 1

众所周知，chrome会创建多个进程，因此您可以获得该行为，可能的解决方案是在匹配时使用break。

def on_click(self):
    textboxValue = self.textbox.text()
    for pid in psutil.pids():  # Controlla se il processo è attivo
        try:
            listapid = psutil.Process(pid)
            if listapid.name() == textboxValue:
                QMessageBox.about(self, 'Process', 'Processo trovato')
                self.textbox.clear()
                break
        except:
            pass

Python：Pyqt5，显示多个消息框，如何显示一个？

1 个答案: