如何使用pyqt4在列表小部件中搜索项目

拉加瓦

在我的示例程序中，我想在列表小部件中显示很多名称。在那儿，我想使用搜索按钮在列表小部件中搜索特定项目，然后在列表小部件中打印该项目名称。

下面是我的代码：

import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
    def initUI(self):
        auto_search_vbox = QtGui.QVBoxLayout(self)
        hbox=QtGui.QHBoxLayout()
        le_search = QtGui.QLineEdit()
        se_btn = QtGui.QPushButton("Search")
        se_btn.clicked.connect(self.find_item)
        hbox.addWidget(le_search)
        hbox.addWidget(se_btn)
        auto_search_vbox.addLayout(hbox)
        self.listwidget = QtGui.QListWidget()
        self.total_list =["machine","printer","xerox bundles"]
        self.listwidget.addItems(self.total_list)
        auto_search_vbox.addWidget(self.listwidget)

        self.show()
    def find_item(self):
        out = self.listwidget.findItems("mac", QtCore.Qt.MatchExactly)
        print out   
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()

尼克

抱歉，我有PyQt5。试试看：

标志Qt :: MatchFlags

该枚举描述了在模型中搜索项目时可以使用的匹配类型。

import sys
#from PyQt4.QtGui  import *
#from PyQt4.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore    import *
from PyQt5.QtGui     import *

class Example(QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()
        
    def initUI(self):
        
        self.le_search = QLineEdit()                            # self.   +++
        
        se_btn    = QPushButton("Search")
        se_btn.clicked.connect(self.find_item)
        
        self.listwidget = QListWidget()
        self.total_list = ["machine", "mac1", "printer", "Printer","xerox bundles", "2mac"]
        self.listwidget.addItems(self.total_list)        

        hbox      = QHBoxLayout()        
        hbox.addWidget(self.le_search)                          # self.   +++
        hbox.addWidget(se_btn)
        
        auto_search_vbox = QVBoxLayout(self)
        auto_search_vbox.addLayout(hbox)
        auto_search_vbox.addWidget(self.listwidget)

    def find_item(self):
#        out = self.listwidget.findItems("mac", QtCore.Qt.MatchExactly)          # ---
#        out = self.listwidget.findItems(self.le_search.text(), Qt.MatchExactly)  
        out = self.listwidget.findItems(self.le_search.text(), 
                                        Qt.MatchContains |          # +++
                                        Qt.MatchCaseSensitive)      # +++
        
        print("out->", [ i.text() for i in out ] ) 
        
        
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Example()
    ex.show()
    sys.exit(app.exec_())