pyqt5的QCompleter自动补全 使用模板

【如下代码，完全复制，直接运行，即可使用】

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"]

################################################
class Widget(QWidget):
    def __init__(self, *args, **kwargs):
 super(Widget, self).__init__(*args, **kwargs)
 layout = QHBoxLayout(self)
 self.lineedit = QLineEdit(self, minimumWidth=200)
 self.combobox = QComboBox(self, minimumWidth=200)
 self.combobox.setEditable(True)


 layout.addWidget(QLabel("QLineEdit", self))
 layout.addWidget(self.lineedit)
 layout.addItem(QSpacerItem(20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))

 layout.addWidget(QLabel("QComboBox", self))
 layout.addWidget(self.combobox)


 #初始化combobox
 self.init_lineedit()
 self.init_combobox()


 #增加选中事件
 self.combobox.activated.connect(self.on_combobox_Activate)



    def init_lineedit(self):
 # 增加自动补全
 self.completer = QCompleter(items_list)
 # 设置匹配模式  有三种： Qt.MatchStartsWith 开头匹配（默认）  Qt.MatchContains 内容匹配  Qt.MatchEndsWith 结尾匹配
 self.completer.setFilterMode(Qt.MatchContains)
 # 设置补全模式  有三种： QCompleter.PopupCompletion（默认）  QCompleter.InlineCompletion   QCompleter.UnfilteredPopupCompletion
 self.completer.setCompletionMode(QCompleter.PopupCompletion)
 # 给lineedit设置补全器
 self.lineedit.setCompleter(self.completer)



    def init_combobox(self):
 # 增加选项元素
 for i in range(len(items_list)):
     self.combobox.addItem(items_list[i])
 self.combobox.setCurrentIndex(-1)

 # 增加自动补全
 self.completer = QCompleter(items_list)
 self.completer.setFilterMode(Qt.MatchContains)
 self.completer.setCompletionMode(QCompleter.PopupCompletion)
 self.combobox.setCompleter(self.completer)


    def on_combobox_Activate(self, index):
 print(self.combobox.count())
 print(self.combobox.currentIndex())
 print(self.combobox.currentText())
 print(self.combobox.currentData())
 print(self.combobox.itemData(self.combobox.currentIndex()))
 print(self.combobox.itemText(self.combobox.currentIndex()))
 print(self.combobox.itemText(index))






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