使用在PyQt5的另一个类中创建的列表

Question

我有以下代码：

import sys
from PyQt5 import QtGui, QtCore, QtWidgets
from PyQt5.QtWidgets import QApplication, QWidget, QMainWindow, QPushButton, 
QComboBox, QCompleter
from PyQt5.QtCore import QSize, Qt, QSortFilterProxyModel, QStringListModel
from PyQt5.QtGui import QIcon
import pandas as pd
import pickle

class ExtendedComboBox(QComboBox):
def __init__(self, parent=None):
    super(ExtendedComboBox, self).__init__(parent)

    self.setFocusPolicy(Qt.StrongFocus)
    self.setEditable(True)

    # add a filter model to filter matching items
    self.pFilterModel = QSortFilterProxyModel(self)
    self.pFilterModel.setFilterCaseSensitivity(Qt.CaseInsensitive)
    self.pFilterModel.setSourceModel(self.model())

    # add a completer, which uses the filter model
    self.completer = QCompleter(self.pFilterModel, self)
    # always show all (filtered) completions
    self.completer.setCompletionMode(QCompleter.UnfilteredPopupCompletion)
    self.setCompleter(self.completer)

    # connect signals
    self.lineEdit().textEdited.connect(self.pFilterModel.setFilterFixedString)
    self.completer.activated.connect(self.on_completer_activated)


# on selection of an item from the completer, select the corresponding item from combobox 
def on_completer_activated(self, text):
    if text:
        index = self.findText(text)
        self.setCurrentIndex(index)
        self.activated[str].emit(self.itemText(index))


# on model change, update the models of the filter and completer as well 
def setModel(self, model):
    super(ExtendedComboBox, self).setModel(model)
    self.pFilterModel.setSourceModel(model)
    self.completer.setModel(self.pFilterModel)


# on model column change, update the model column of the filter and completer as well
def setModelColumn(self, column):
    self.completer.setCompletionColumn(column)
    self.pFilterModel.setFilterKeyColumn(column)
    super(ExtendedComboBox, self).setModelColumn(column) 

class MainWindow(QMainWindow):

def __init__(self):
    super().__init__()

    self.initUI()


def initUI(self):


    self.setGeometry(100, 100, 800, 600)
    self.setWindowTitle('Tennis Form')
    self.setWindowIcon(QIcon('C:/Users/XXX/Desktop/Project-Tennis/Tennis-icon.png'))   

    button1 = QPushButton("ATP", self)
    button1.resize(350,50)
    button1.clicked.connect(self.clickMethod1)
    button1.move(225, 200)   

    button2 = QPushButton("WTA", self)
    button2.resize(350,50)
    button2.clicked.connect(self.clickMethod2)
    button2.move(225, 275)

    self.select = Select_player(self)

def clickMethod1(self):
    import pandas as pd
    import pickle
    df = pd.read_pickle('C:/Users/XXX/Desktop/Project-Tennis/ATP_Rankings.pickle')
    my_list = df["Name"].tolist()
    self.select.show()

def clickMethod2(self):
    import pandas as pd
    import pickle
    df = pd.read_pickle('C:/Users/XXX/Desktop/Project-Tennis/WTA_Rankings.pickle')
    my_list = df["Name"].tolist()
    self.select.show()

class Select_player(QMainWindow):

def __init__(self, parent=None):
    super(Select_player,self).__init__()       
    self.setGeometry(100, 100, 800, 600)
    self.setWindowTitle('Select Players')
    self.setWindowIcon(QIcon('C:/Users/XXX/Desktop/Project-Tennis/Tennis-icon.png'))

    self.player1 = ExtendedComboBox(self)
    self.player1.resize(350,25)
    self.player1.move(225, 200)

    self.player2 = ExtendedComboBox(self)
    self.player2.resize(350,25)
    self.player2.move(225, 275)

if __name__ == '__main__':

app = QApplication(sys.argv)
mainWin = MainWindow()
mainWin.show()
sys.exit(app.exec_())

我创建了一个主窗口（MainWindow），在该窗口上有两个按钮，当按下按钮时，这两个按钮都将列表创建为“ my_list”。 列表值根据所按下的按钮而不同。

在按下一个按钮时打开的下一个窗口（Select_player）中，有两个组合框。

我要实现的是将先前在主窗口中创建的“ my_list”中的值放入两个组合框。

我已经尝试过类似self.player1.addItems（my_list）的操作，但出现错误“名称'my_list'未定义”。

如何在Select_player的MainWindow类中使用创建的“ my_list”？

Answer 1

my_list在定义它的函数中具有局部作用域（clickMethod1（）和clickMethod2（））。 在这些功能之外，my_list不可见。

您可以将my_list声明为MainWindow类的属性-然后可以将其作为mainWin.my_list进行访问。