【PyQt5-Qt Designer】QComboBox(下拉列表框) 使用模板

 import sys
 from PyQt5.QtWidgets import *
 from PyQt5.QtGui import *
 from PyQt5.QtCore import *
 ################################################
 items_list=["C","C++","Java","Python","JavaScript","C#","Swift","go","Ruby","Lua","PHP"]
 datas_list=[1972,1983,1995,1991,1992,2000,2014,2009,1995,1993,1995]

 class Widget(QWidget):
     def __init__(self, *args, **kwargs):
         super(Widget, self).__init__(*args, **kwargs)
         layout = QVBoxLayout(self)
         self.combobox1 = QComboBox(self, minimumWidth=200)
         self.combobox2 = QComboBox(self, minimumWidth=200)
         self.combobox3 = QComboBox(self, minimumWidth=200)
         self.combobox4 = QComboBox(self, minimumWidth=200)

         layout.addWidget(QLabel("增加单项，不带数据", self))
         layout.addWidget(self.combobox1)
         layout.addItem(QSpacerItem(20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))

         layout.addWidget(QLabel("增加单项，附带数据", self))
         layout.addWidget(self.combobox2)
         layout.addItem(QSpacerItem(20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))

         layout.addWidget(QLabel("增加多项，不带数据", self))
         layout.addWidget(self.combobox3)
         layout.addItem(QSpacerItem(20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))

         layout.addWidget(QLabel("设置模型，不带数据", self))
         layout.addWidget(self.combobox4)

         #初始化combobox
         self.init_combobox1()
         self.init_combobox2()
         self.init_combobox3()
         self.init_combobox4()

         #增加选中事件
         self.combobox1.activated.connect(self.on_combobox1_Activate)
         self.combobox2.activated.connect(self.on_combobox2_Activate)
         self.combobox3.activated.connect(self.on_combobox3_Activate)
         self.combobox4.activated.connect(self.on_combobox4_Activate)

     ####### addItem()  增加单项元素，不带数据  #########
     def init_combobox1(self):
         for i in range(len(items_list)):
             self.combobox1.addItem(items_list[i])
         self.combobox1.setCurrentIndex(-1)

     def on_combobox1_Activate(self, index):
         print(self.combobox1.count())　　#返回列表框下拉项数目
         print(self.combobox1.currentIndex())　　#返回选中项索引
         print(self.combobox1.currentText())　　#返回选中项的文本内容
         print(self.combobox1.currentData())　　#返回当前数据
         print(self.combobox1.itemData(self.combobox1.currentIndex()))
         print(self.combobox1.itemText(self.combobox1.currentIndex()))
         print(self.combobox1.itemText(index))

     ####### addItem()  增加单项元素，附带数据  #########
     def init_combobox2(self):
         for i in range(len(items_list)):
             self.combobox2.addItem(items_list[i],datas_list[i])
         self.combobox2.setCurrentIndex(-1)

     def on_combobox2_Activate(self, index):
         print(self.combobox2.count())
         print(self.combobox2.currentIndex())　　
         print(self.combobox2.currentText())
         print(self.combobox2.currentData())
         print(self.combobox2.itemData(self.combobox2.currentIndex()))
         print(self.combobox2.itemText(self.combobox2.currentIndex()))
         print(self.combobox2.itemText(index))

     ####### addItems()  增加多项元素，不带数据  #########
     def init_combobox3(self):
         self.combobox3.addItems(items_list)
         self.combobox3.setCurrentIndex(-1)

     def on_combobox3_Activate(self, index):
         print(self.combobox3.count())
         print(self.combobox3.currentIndex())
         print(self.combobox3.currentText())
         print(self.combobox3.currentData())
         print(self.combobox3.itemData(self.combobox3.currentIndex()))
         print(self.combobox3.itemText(self.combobox3.currentIndex()))
         print(self.combobox3.itemText(index))

     ####### setModel()  设置数据模型，不带数据  #########
     def init_combobox4(self):
         self.tablemodel = QStringListModel(items_list)
         self.combobox4.setModel(self.tablemodel)
         self.combobox4.setCurrentIndex(-1)

     def on_combobox4_Activate(self, index):
         print(self.combobox4.count())
         print(self.combobox4.currentIndex())
         print(self.combobox4.currentText())
         print(self.combobox4.currentData())
         print(self.combobox4.itemData(self.combobox4.currentIndex()))
         print(self.combobox4.itemText(self.combobox4.currentIndex()))
         print(self.combobox4.itemText(index))

 if __name__ == "__main__":
     app = QApplication(sys.argv)
     w = Widget()
     w.show()
     sys.exit(app.exec_())