更改字典Python/PyQt5中的資料后功能停止作業

我已經用我的這個小程式整理了所有內容，但是在我將實際資料插入字典后，button.setEnable(False) 停止作業。任何想法為什么？

代碼：

self.countBtn = QPushButton("Do something", self)
self.countBtn.clicked.connect(self.onButtonClick)

def onButtonClick(self):
        self.serversChecked = Worker()
        self.textOutput.clear()
        self.serversChecked.amount_of_servers.connect(self.setupUi)
        self.serversChecked.progress.connect(self.countCheckedServers)
        self.serversChecked.offline_servers.connect(self.toScreen)
        self.serversChecked.pbar_step.connect(self.pbar_step)
        self.serversChecked.amount_of_servers.connect(self.maxPbar)
        self.serversChecked.start()
        self.countBtn.setEnabled(False)
        self.serversChecked.finished.connect(
            lambda: self.countBtn.setEnabled(True)
        )

這是我認為相關的所有代碼，如果需要更多代碼，我可以提供。

歡迎任何想法，因為我很困惑......

編輯：根據要求，其余代碼：

import sys, os, subprocess

from PyQt5.QtCore import QThread, pyqtSignal, Qt
from PyQt5.QtWidgets import (
    QApplication,
    QLabel,
    QMainWindow,
    QPlainTextEdit,
    QPushButton,
    QVBoxLayout,
    QWidget,
    QProgressBar
)

class Worker(QThread):
    finished = pyqtSignal(str)
    progress = pyqtSignal(int)
    offline_servers = pyqtSignal(str)
    amount_of_servers = pyqtSignal(int)
    pbar_step = pyqtSignal(float)
    start_long_task = pyqtSignal(int)

    ips = {
        '001' : '142.250.178.14', '002' : '104.18.2.89', '003' : '10.251.63.23'
    }
    amount_of_servers_int = len(ips)

    def run(self):
        self.start_long_task.emit(1)
        amount_of_servers_int = len(self.ips)
        self.amount_of_servers.emit(amount_of_servers_int)

        with open(os.devnull, 'w') as DEVNULL:
            server = 0
            pbar_progress = 0
            for x, y in self.ips.items():
                try:
                    subprocess.check_call(
                    ['ping', '-n', '1', y],
                    stdout=DEVNULL,  # suppress output
                    stderr=DEVNULL
                    )
                except subprocess.CalledProcessError:
                    nextServer = (working output here)
                    self.offline_servers.emit(nextServer)
                server = server   1
                pbar_progress = pbar_progress   1
                self.pbar_step.emit(pbar_progress)
                self.progress.emit(server)
        self.finished.emit('') 

class Window(QMainWindow):  

    def __init__(self, parent=None):
        super().__init__(parent)
        self.setupUi()
        
    def setupUi(self):
        self.setWindowTitle("")
        self.resize(300, 400)
        self.centralWidget = QWidget()
        self.setCentralWidget(self.centralWidget)
        
        self.textOutput = QPlainTextEdit(self)
        self.textOutput.setReadOnly(True)
        self.textOutput.resize(280, 300)
        self.textOutput.move(10, 5)

        self.serversCheckedtoScreen = QLabel("Checked: ", self)
        self.serversCheckedtoScreen.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
        
        self.pbar = QProgressBar(self, objectName="progressBar")  
        self.pbar.setGeometry(200, 80, 280, 20)
        self.pbar.setValue(0)
        self.pbar.setMinimum(0)
        
        self.countBtn = QPushButton("Check Servers", self)
        self.countBtn.clicked.connect(self.onButtonClick)
        # Set the layout
        layout = QVBoxLayout()
        layout.addWidget(self.textOutput)
        layout.addWidget(self.serversCheckedtoScreen)
        layout.addWidget(self.pbar)
        layout.addWidget(self.countBtn)

        self.pbar.setStyleSheet("""
        QWidget {
            text-align: center;
            }
        """)
        self.centralWidget.setLayout(layout)

    def onButtonClick(self):
        self.serversChecked = Worker()
        self.textOutput.clear()
################This is the issue as pointed out by @musicamante ##########
        **self.serversChecked.amount_of_servers.connect(self.setupUi)**
################This piece of code shouldnt even be here, code blindness is a thing #####
        self.serversChecked.progress.connect(self.countCheckedServers)
        self.serversChecked.offline_servers.connect(self.toScreen)
        self.serversChecked.pbar_step.connect(self.pbar_step)
        self.serversChecked.amount_of_servers.connect(self.maxPbar)
        self.serversChecked.start_long_task.connect(self.disableButton)
        self.serversChecked.start()

        self.countBtn.setEnabled(False) ##### WHY IT DOESNT WORK

        self.serversChecked.finished.connect(
            lambda: self.countBtn.setEnabled(True)
        )

    def countCheckedServers(self, value):
        max = self.serversChecked.amount_of_servers_int
        self.serversCheckedtoScreen.setText(f"Servers Checked: {value} / "   str(max))

    def toScreen(self, value):
        self.textOutput.appendPlainText(value)
    
    def pbar_step(self, value):
        self.pbar.setValue(int(value))

    def maxPbar(self,value):
        self.pbar.setMaximum(value)
    
    def disableButton(self, n): # added extra function to check but makes no difference
        if n == 1:
            self.countBtn.setDisabled(True)

app = QApplication(sys.argv)
win = Window()
win.show()
sys.exit(app.exec())

uj5u.com熱心網友回復：

正如@musicamante 在評論中正確指出的那樣，我在下面留下了一行代碼

def onButtonClick(self):
        self.serversChecked = Worker()
        self.textOutput.clear()

洗掉后

self.serversChecked.amount_of_servers.connect(self.setupUi)

按照他的建議，問題已經解決了。我已經要求他創建一個答案，這樣我就可以相信他，我希望他能盡快做到。因此，我還沒有標記為完整。

與此同時，他的原始評論的副本：

self.setupUi每次啟動作業程式時都會呼叫，因此您正在創建一個新的 UI。該信號不會立即發出，而是異步發出。因此，按鈕被禁用，但在此之后執行緒實際啟動，這會創建一個新的 UI，并帶有一個啟用的按鈕。洗掉self.serversChecked.amount_of_servers.connect(self.setupUi)。

可悲的是，代碼盲是一回事，但是，有一些杰出的人愿意提供幫助。再次感謝@musicamante

標籤：Python 按钮 pyqt5

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