从创建 UI 的单独文件 (class) 设置初始 ComboBox 值
Setting initial ComboBox values from separate file (class) from where UI is created
我花了很多时间使用 tkinter 制作 GUIs，但从未使用过 OOP 风格，所以我想开始学习 PyQt5，然后开始学习 OOP（肯定是在努力通过它）。
我目前有三个文件：
app.py - 应用程序的“主要入口点”
main_menu.py - Python 从 PyQt 设计器转换的文件 .ui 文件
add_functions.py - 文件将具有根据用户操作更新 GUI 和按钮点击 运行 功能的文件
我的问题是，如何在创建小部件的“main_menu.py”文件之外更新组合框的初始值？我假设我在“app.py”文件中的某处执行此操作，但我无法弄清楚。
下面的代码没有抛出任何错误，但是组合框是空白的，其中一个应该是字符串列表，另一个应该是单个字符串（稍后将根据第一个组合框选择进行更新）
我能够让它与“main_menu.py”文件中的所有内容一起工作，但后来我意识到每次我想更改 UI 时都会产生问题。
app.py
from PyQt5.QtWidgets import QMainWindow
from PyQt5 import QtWidgets
# import GUI from designer file
from main_menu import Ui_main_menu
# import other functions
from add_functions import ChangeLists
class Main(QMainWindow, Ui_main_menu):
def __init__(self, parent=None):
super(Main, self).__init__(parent)
self.setupUi(self)
# Team List
team_list_file = open(r'C:\NHLdb_pyqt\files\NHLteams.txt', 'r')
team_list = team_list_file.read().splitlines()
team_list_file.close()
print("team list: ", team_list)
# Initial Player List
player_list_init = "Please Select a Team"
# update combo box lists
print("team list: ", team_list)
self.team_select_combobox.addItems(team_list)
self.player_select_combobox.addItem(player_list_init)
# connect combo box to function that will change player list based on team list selection
# self.team_select_combobox.currentTextChanged.connect(ChangeLists.team_changed)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
main_menu = QtWidgets.QDialog()
ui = Ui_main_menu()
ui.setupUi(main_menu)
main_menu.show()
sys.exit(app.exec_())
main_menu.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_main_menu(object):
def setupUi(self, main_menu):
main_menu.setObjectName("main_menu")
main_menu.resize(463, 408)
self.horizontalLayout_2 = QtWidgets.QHBoxLayout(main_menu)
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.tabWidget = QtWidgets.QTabWidget(main_menu)
self.tabWidget.setObjectName("tabWidget")
self.get_data_tab = QtWidgets.QWidget()
self.get_data_tab.setObjectName("get_data_tab")
self.verticalLayout = QtWidgets.QVBoxLayout(self.get_data_tab)
self.verticalLayout.setObjectName("verticalLayout")
self.team_player_layout = QtWidgets.QGridLayout()
self.team_player_layout.setObjectName("team_player_layout")
self.player_select_label = QtWidgets.QLabel(self.get_data_tab)
self.player_select_label.setAlignment(QtCore.Qt.AlignCenter)
self.player_select_label.setObjectName("player_select_label")
self.team_player_layout.addWidget(self.player_select_label, 2, 0, 1, 1)
self.team_select_combobox = QtWidgets.QComboBox(self.get_data_tab)
self.team_select_combobox.setCurrentText("")
self.team_select_combobox.setPlaceholderText("")
self.team_select_combobox.setObjectName("team_select_combobox")
self.team_player_layout.addWidget(self.team_select_combobox, 0, 1, 1, 1)
self.player_select_combobox = QtWidgets.QComboBox(self.get_data_tab)
self.player_select_combobox.setObjectName("player_select_combobox")
self.team_player_layout.addWidget(self.player_select_combobox, 2, 1, 1, 1)
self.team_select_label = QtWidgets.QLabel(self.get_data_tab)
self.team_select_label.setAlignment(QtCore.Qt.AlignCenter)
self.team_select_label.setObjectName("team_select_label")
self.team_player_layout.addWidget(self.team_select_label, 0, 0, 1, 1)
self.get_player_data_button = QtWidgets.QPushButton(self.get_data_tab)
self.get_player_data_button.setObjectName("get_player_data_button")
self.team_player_layout.addWidget(self.get_player_data_button, 3, 0, 1, 2)
self.verticalLayout.addLayout(self.team_player_layout)
self.tableWidget = QtWidgets.QTableWidget(self.get_data_tab)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.tableWidget.sizePolicy().hasHeightForWidth())
self.tableWidget.setSizePolicy(sizePolicy)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(4)
self.tableWidget.setRowCount(0)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(0, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(1, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(2, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(3, item)
self.verticalLayout.addWidget(self.tableWidget)
self.tabWidget.addTab(self.get_data_tab, "")
self.view_db_tab = QtWidgets.QWidget()
self.view_db_tab.setObjectName("view_db_tab")
self.tabWidget.addTab(self.view_db_tab, "")
self.horizontalLayout_2.addWidget(self.tabWidget)
self.retranslateUi(main_menu)
self.tabWidget.setCurrentIndex(0)
QtCore.QMetaObject.connectSlotsByName(main_menu)
def retranslateUi(self, main_menu):
_translate = QtCore.QCoreApplication.translate
main_menu.setWindowTitle(_translate("main_menu", "NHL Database"))
self.player_select_label.setText(_translate("main_menu", "Select A Player:"))
self.team_select_label.setText(_translate("main_menu", "Select A Team:"))
self.get_player_data_button.setText(_translate("main_menu", "Get Player Data"))
item = self.tableWidget.horizontalHeaderItem(0)
item.setText(_translate("main_menu", "Year"))
item = self.tableWidget.horizontalHeaderItem(1)
item.setText(_translate("main_menu", "Team"))
item = self.tableWidget.horizontalHeaderItem(2)
item.setText(_translate("main_menu", "League"))
item = self.tableWidget.horizontalHeaderItem(3)
item.setText(_translate("main_menu", "GP"))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.get_data_tab), _translate("main_menu", "Get Player Data"))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.view_db_tab), _translate("main_menu", "View Database"))
add_functions
from os import path
from PyQt5 import QtCore, QtGui, QtWidgets
class ChangeLists:
def team_changed(self):
index = self.team_select_combobox.currentText()
if index != 0 and path.exists(r'C:\NHLdb\files\_' + str(index) + '.txt'):
player_list_file = open(r'C:\NHLdb\files\_' + str(index) + '.txt', 'r')
player_list_update = player_list_file.read().splitlines()
player_list_file.close()
self.player_select_combobox.clear()
self.player_select_combobox.addItems(player_list_update)
if index != 0 and not path.exists(r'C:\NHLdb\files\_' + str(index) + '.txt'):
self.player_select_combobox.clear()
self.player_select_combobox.addItem("Prospects Not Compiled")
您在 app.py 中的调用顺序有点不对。 Class Main 从未被调用，因此您在那里定义的初始化例程永远不会被执行。此外，class Main 继承自错误的 Window 类型。在你的例子中，你设计了一个 QDialog，所以它应该继承自它（而不是 QMainWindow）。
解决这些问题后，您在 Main class 中定义的所有内容都应该按预期工作：
修改app.py
from PyQt5 import QtWidgets
from main_menu import Ui_main_menu
class Main(QtWidgets.QDialog, Ui_main_menu):
def __init__(self):
super().__init__()
# setup ui
self.setupUi(self)
# Team List
team_list_file = open(r'D:\temp.txt', 'r')
team_list = team_list_file.read().splitlines()
team_list_file.close()
# Initial Player List
player_list_init = "Please Select a Team"
# update combo box lists
self.team_select_combobox.addItems(team_list)
self.player_select_combobox.addItem(player_list_init)
if __name__ == "__main__":
app = QtWidgets.QApplication([])
ui = Main()
ui.show()
app.exec_()
我花了很多时间使用 tkinter 制作 GUIs，但从未使用过 OOP 风格，所以我想开始学习 PyQt5，然后开始学习 OOP（肯定是在努力通过它）。
我目前有三个文件：
app.py - 应用程序的“主要入口点”
main_menu.py - Python 从 PyQt 设计器转换的文件 .ui 文件
add_functions.py - 文件将具有根据用户操作更新 GUI 和按钮点击 运行 功能的文件
我的问题是，如何在创建小部件的“main_menu.py”文件之外更新组合框的初始值？我假设我在“app.py”文件中的某处执行此操作，但我无法弄清楚。
下面的代码没有抛出任何错误，但是组合框是空白的，其中一个应该是字符串列表，另一个应该是单个字符串（稍后将根据第一个组合框选择进行更新）
我能够让它与“main_menu.py”文件中的所有内容一起工作，但后来我意识到每次我想更改 UI 时都会产生问题。
app.py
from PyQt5.QtWidgets import QMainWindow
from PyQt5 import QtWidgets
# import GUI from designer file
from main_menu import Ui_main_menu
# import other functions
from add_functions import ChangeLists
class Main(QMainWindow, Ui_main_menu):
def __init__(self, parent=None):
super(Main, self).__init__(parent)
self.setupUi(self)
# Team List
team_list_file = open(r'C:\NHLdb_pyqt\files\NHLteams.txt', 'r')
team_list = team_list_file.read().splitlines()
team_list_file.close()
print("team list: ", team_list)
# Initial Player List
player_list_init = "Please Select a Team"
# update combo box lists
print("team list: ", team_list)
self.team_select_combobox.addItems(team_list)
self.player_select_combobox.addItem(player_list_init)
# connect combo box to function that will change player list based on team list selection
# self.team_select_combobox.currentTextChanged.connect(ChangeLists.team_changed)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
main_menu = QtWidgets.QDialog()
ui = Ui_main_menu()
ui.setupUi(main_menu)
main_menu.show()
sys.exit(app.exec_())
main_menu.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_main_menu(object):
def setupUi(self, main_menu):
main_menu.setObjectName("main_menu")
main_menu.resize(463, 408)
self.horizontalLayout_2 = QtWidgets.QHBoxLayout(main_menu)
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.tabWidget = QtWidgets.QTabWidget(main_menu)
self.tabWidget.setObjectName("tabWidget")
self.get_data_tab = QtWidgets.QWidget()
self.get_data_tab.setObjectName("get_data_tab")
self.verticalLayout = QtWidgets.QVBoxLayout(self.get_data_tab)
self.verticalLayout.setObjectName("verticalLayout")
self.team_player_layout = QtWidgets.QGridLayout()
self.team_player_layout.setObjectName("team_player_layout")
self.player_select_label = QtWidgets.QLabel(self.get_data_tab)
self.player_select_label.setAlignment(QtCore.Qt.AlignCenter)
self.player_select_label.setObjectName("player_select_label")
self.team_player_layout.addWidget(self.player_select_label, 2, 0, 1, 1)
self.team_select_combobox = QtWidgets.QComboBox(self.get_data_tab)
self.team_select_combobox.setCurrentText("")
self.team_select_combobox.setPlaceholderText("")
self.team_select_combobox.setObjectName("team_select_combobox")
self.team_player_layout.addWidget(self.team_select_combobox, 0, 1, 1, 1)
self.player_select_combobox = QtWidgets.QComboBox(self.get_data_tab)
self.player_select_combobox.setObjectName("player_select_combobox")
self.team_player_layout.addWidget(self.player_select_combobox, 2, 1, 1, 1)
self.team_select_label = QtWidgets.QLabel(self.get_data_tab)
self.team_select_label.setAlignment(QtCore.Qt.AlignCenter)
self.team_select_label.setObjectName("team_select_label")
self.team_player_layout.addWidget(self.team_select_label, 0, 0, 1, 1)
self.get_player_data_button = QtWidgets.QPushButton(self.get_data_tab)
self.get_player_data_button.setObjectName("get_player_data_button")
self.team_player_layout.addWidget(self.get_player_data_button, 3, 0, 1, 2)
self.verticalLayout.addLayout(self.team_player_layout)
self.tableWidget = QtWidgets.QTableWidget(self.get_data_tab)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.tableWidget.sizePolicy().hasHeightForWidth())
self.tableWidget.setSizePolicy(sizePolicy)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(4)
self.tableWidget.setRowCount(0)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(0, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(1, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(2, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(3, item)
self.verticalLayout.addWidget(self.tableWidget)
self.tabWidget.addTab(self.get_data_tab, "")
self.view_db_tab = QtWidgets.QWidget()
self.view_db_tab.setObjectName("view_db_tab")
self.tabWidget.addTab(self.view_db_tab, "")
self.horizontalLayout_2.addWidget(self.tabWidget)
self.retranslateUi(main_menu)
self.tabWidget.setCurrentIndex(0)
QtCore.QMetaObject.connectSlotsByName(main_menu)
def retranslateUi(self, main_menu):
_translate = QtCore.QCoreApplication.translate
main_menu.setWindowTitle(_translate("main_menu", "NHL Database"))
self.player_select_label.setText(_translate("main_menu", "Select A Player:"))
self.team_select_label.setText(_translate("main_menu", "Select A Team:"))
self.get_player_data_button.setText(_translate("main_menu", "Get Player Data"))
item = self.tableWidget.horizontalHeaderItem(0)
item.setText(_translate("main_menu", "Year"))
item = self.tableWidget.horizontalHeaderItem(1)
item.setText(_translate("main_menu", "Team"))
item = self.tableWidget.horizontalHeaderItem(2)
item.setText(_translate("main_menu", "League"))
item = self.tableWidget.horizontalHeaderItem(3)
item.setText(_translate("main_menu", "GP"))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.get_data_tab), _translate("main_menu", "Get Player Data"))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.view_db_tab), _translate("main_menu", "View Database"))
add_functions
from os import path
from PyQt5 import QtCore, QtGui, QtWidgets
class ChangeLists:
def team_changed(self):
index = self.team_select_combobox.currentText()
if index != 0 and path.exists(r'C:\NHLdb\files\_' + str(index) + '.txt'):
player_list_file = open(r'C:\NHLdb\files\_' + str(index) + '.txt', 'r')
player_list_update = player_list_file.read().splitlines()
player_list_file.close()
self.player_select_combobox.clear()
self.player_select_combobox.addItems(player_list_update)
if index != 0 and not path.exists(r'C:\NHLdb\files\_' + str(index) + '.txt'):
self.player_select_combobox.clear()
self.player_select_combobox.addItem("Prospects Not Compiled")
您在 app.py 中的调用顺序有点不对。 Class Main 从未被调用，因此您在那里定义的初始化例程永远不会被执行。此外，class Main 继承自错误的 Window 类型。在你的例子中，你设计了一个 QDialog，所以它应该继承自它（而不是 QMainWindow）。
解决这些问题后，您在 Main class 中定义的所有内容都应该按预期工作：
修改app.py
from PyQt5 import QtWidgets
from main_menu import Ui_main_menu
class Main(QtWidgets.QDialog, Ui_main_menu):
def __init__(self):
super().__init__()
# setup ui
self.setupUi(self)
# Team List
team_list_file = open(r'D:\temp.txt', 'r')
team_list = team_list_file.read().splitlines()
team_list_file.close()
# Initial Player List
player_list_init = "Please Select a Team"
# update combo box lists
self.team_select_combobox.addItems(team_list)
self.player_select_combobox.addItem(player_list_init)
if __name__ == "__main__":
app = QtWidgets.QApplication([])
ui = Main()
ui.show()
app.exec_()