本文内容由阿里云实名注册用户自发贡献，版权归原作者所有，阿里云开发者社区不拥有其著作权，亦不承担相应法律责任。具体规则请查看《 阿里云开发者社区用户服务协议 》和 《 阿里云开发者社区知识产权保护指引 》。如果您发现本社区中有涉嫌抄袭的内容，填写 侵权投诉表单 进行举报，一经查实，本社区将立刻删除涉嫌侵权内容。 # 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)

【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))