如何检查RadioButton是否是从其他类中检查的

Question

我正在PyQt5中制作一个GUI，其中有多个选项卡。在其中一个选项卡中，用户选择一个单选按钮，其中包含他们正在输入的数据类型。

这些信息改变了其他选项卡中可用的按钮，我在从原始选项卡类传递这些信息时遇到了问题。我想看看是否从另一个选项卡中选中了单选按钮，如果是，请启用按钮。

我有一个函数可以根据选择的单选按钮返回字符串，但当我从另一个选项卡调用getDataType((函数时，我会得到错误"AttributeError:模块'DataTab'没有属性'getDataType'。">

我曾尝试将getDataType((函数移到DataTab类之外，但由于单选按钮使用"self"，我无法访问它们。

我也尝试过创建一个新类，并从函数中调用这个新类，但后来我陷入了如何将信息获取到另一个选项卡的困境

因此，在本例中，一旦用户在"数据"选项卡中选择单选按钮，我就希望在"分析"选项卡上启用相应的按钮。

当我取消注释对getDataType((的调用时，我得到以下错误："AttributeError:模块'DataTab'没有属性'getDataType'">

from PyQt5.QtWidgets import (QWidget, QVBoxLayout, QLabel, QTableWidget, QTableWidgetItem,
QLineEdit, QFileDialog, QRadioButton, QGroupBox, QPushButton,
QGridLayout, QButtonGroup, QApplication, QAbstractItemView,
QTabWidget)
from PyQt5.QtGui import QIcon
import sys, os

class TabPage(QTabWidget):
def __init__(self):
super().__init__()
self.setStyleSheet('font: 15pt Tw Cen MT')
self.show()
# Creating the tabs here to have a reference
self.tabWidget = QTabWidget()
self.tabWidget.addTab(DataTab(), "Data Input")
self.tabWidget.addTab(AnalysisTab(), "Analysis")
self.layout = QVBoxLayout()
self.layout.addWidget(self.tabWidget)
self.setLayout(self.layout)
# The DataTab class holds all the GUI for the DataTab
class DataTab(QWidget):
def __init__(self):
super().__init__()
self.app = QApplication(sys.argv)
self.layout = QGridLayout()
self.intervalRadioButton = QRadioButton("Interval")
self.ordinalRadioButton = QRadioButton("Ordinal")
self.frequencyRadioButton = QRadioButton("Frequency")
self.submitButton = QPushButton("Submit Data")
self.layout.addWidget(self.intervalRadioButton, 7, 0, 1, 3)
self.layout.addWidget(self.ordinalRadioButton, 8, 0, 1, 3)
self.layout.addWidget(self.frequencyRadioButton, 9, 0, 1, 3)
self.setLayout(self.layout)
self.show()

def getDataType(self):
if self.intervalRadioButton.isChecked():
return "interval"
elif self.ordinalRadioButton.isChecked():
return "ordinal"
elif self.frequencyRadioButton.isChecked():
return "frequency"

class AnalysisTab(QWidget):
def __init__(self):
super().__init__()
self.app = QApplication(sys.argv)
self.createChooseIntervalGroup()
self.createChooseOrdinalGroup()
self.createChooseFrequencyGroup()
self.layout = QGridLayout()
self.layout.addWidget(self.ChooseIntervalGroup, 0, 1)
self.layout.addWidget(self.ChooseOrdinalGroup, 1, 1)
self.layout.addWidget(self.ChooseFrequencyGroup, 2, 1)
self.setLayout(self.layout)
self.show()
# The right side of AnalysisTab containing the buttons for
# analysis
def createChooseIntervalGroup(self):
self.ChooseIntervalGroup = QGroupBox("Tests for Interval Data")
self.analyzeIntervalButton = QPushButton("Analyze")
self.analyzeIntervalButton.setEnabled(False)
# if DataTab.getDataType() != "interval":
#     self.analyzeIntervalButton.setEnabled(True)
self.layout = QGridLayout()
self.layout.addWidget(self.analyzeIntervalButton, 1, 1)
self.ChooseIntervalGroup.setLayout(self.layout)
# The right side of AnalysisTab containing the buttons for
# analysis
def createChooseOrdinalGroup(self):
self.ChooseOrdinalGroup = QGroupBox("Tests for Ordinal Data")
self.analyzeOrdinalButton = QPushButton("Analyze")
self.analyzeOrdinalButton.setEnabled(False)
# if DataTab.getDataType() != "ordinal":
#     self.analyzeIntervalButton.setEnabled(True)
self.layout = QGridLayout()
self.layout.addWidget(self.analyzeOrdinalButton, 1, 1)
self.ChooseOrdinalGroup.setLayout(self.layout)
# The right side of AnalysisTab containing the buttons for
# analysis
def createChooseFrequencyGroup(self):
self.ChooseFrequencyGroup = QGroupBox("Tests for Frequency Data")
self.analyzeFrequencyButton = QPushButton("Analyze")
self.analyzeFrequencyButton.setEnabled(False)
# if DataTab.getDataType() != "frequency":
#     self.analyzeIntervalButton.setEnabled(True)
self.layout = QGridLayout()
self.layout.addWidget(self.analyzeFrequencyButton, 1, 1)
self.ChooseFrequencyGroup.setLayout(self.layout)
def run():
app = QApplication(sys.argv)
tabPage = TabPage()
tabPage.show()
app.exec_()
run()

Answer 1

这种情况的一个可能解决方案是使用信号通知QRadioButton的状态更改，以启用或禁用按钮。

import sys
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import (
QWidget,
QVBoxLayout,
QRadioButton,
QGroupBox,
QPushButton,
QGridLayout,
QButtonGroup,
QApplication,
QTabWidget,
)

class Widget(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.setStyleSheet("font: 15pt Tw Cen MT")
self.data_tab = DataTab()
self.analysis_tab = AnalysisTab()
self.tabWidget = QTabWidget()
self.tabWidget.addTab(self.data_tab, "Data Input")
self.tabWidget.addTab(self.analysis_tab, "Analysis")
layout = QVBoxLayout(self)
layout.addWidget(self.tabWidget)
self.data_tab.intervalRadioButton.toggled.connect(
self.analysis_tab.analyzeIntervalButton.setEnabled
)
self.data_tab.ordinalRadioButton.toggled.connect(
self.analysis_tab.analyzeOrdinalButton.setEnabled
)
self.data_tab.frequencyRadioButton.toggled.connect(
self.analysis_tab.analyzeFrequencyButton.setEnabled
)

class DataTab(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
layout = QGridLayout(self)
self.intervalRadioButton = QRadioButton("Interval")
self.ordinalRadioButton = QRadioButton("Ordinal")
self.frequencyRadioButton = QRadioButton("Frequency")
self.submitButton = QPushButton("Submit Data")
layout.addWidget(self.intervalRadioButton, 7, 0, 1, 3)
layout.addWidget(self.ordinalRadioButton, 8, 0, 1, 3)
layout.addWidget(self.frequencyRadioButton, 9, 0, 1, 3)

class AnalysisTab(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.createChooseIntervalGroup()
self.createChooseOrdinalGroup()
self.createChooseFrequencyGroup()
layout = QGridLayout(self)
layout.addWidget(self.ChooseIntervalGroup, 0, 1)
layout.addWidget(self.ChooseOrdinalGroup, 1, 1)
layout.addWidget(self.ChooseFrequencyGroup, 2, 1)
def createChooseIntervalGroup(self):
self.ChooseIntervalGroup = QGroupBox("Tests for Interval Data")
self.analyzeIntervalButton = QPushButton("Analyze")
self.analyzeIntervalButton.setEnabled(False)
layout = QGridLayout(self.ChooseIntervalGroup)
layout.addWidget(self.analyzeIntervalButton, 1, 1)
def createChooseOrdinalGroup(self):
self.ChooseOrdinalGroup = QGroupBox("Tests for Ordinal Data")
self.analyzeOrdinalButton = QPushButton("Analyze")
self.analyzeOrdinalButton.setEnabled(False)
layout = QGridLayout(self.ChooseOrdinalGroup)
layout.addWidget(self.analyzeOrdinalButton, 1, 1)
def createChooseFrequencyGroup(self):
self.ChooseFrequencyGroup = QGroupBox("Tests for Frequency Data")
self.analyzeFrequencyButton = QPushButton("Analyze")
self.analyzeFrequencyButton.setEnabled(False)
layout = QGridLayout(self.ChooseFrequencyGroup)
layout.addWidget(self.analyzeFrequencyButton, 1, 1)

def run():
app = QApplication(sys.argv)
tabPage = Widget()
tabPage.show()
app.exec_()

run()