QTreeView+QFileSystemModel显示没有后缀的文件_qfilesystemmodel不显示扩展名

通过QSortFilterProxyModel的setFilterRegExp方法，设置指定的正则表达式

#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
********************************************************************************************
@作者: Aaron.Ma
@文件: view.py
@时间: 2022/8/15 16:12
********************************************************************************************
"""
import sys
import typing

from PyQt5 import QtCore, QtWidgets
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *


class _SortFilterProxyModel(QtCore.QSortFilterProxyModel):

    def headerData(self, section: int, orientation: QtCore.Qt.Orientation, role: int = ...) -> typing.Any:
        if orientation == QtCore.Qt.Horizontal:
            if role == QtCore.Qt.TextAlignmentRole:
                return QtCore.Qt.AlignCenter
        return super(_SortFilterProxyModel, self).headerData(section, orientation, role)


class App(QTreeView):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.resize(640, 480)
        self.setWindowTitle("Dir View")
        # 这里得到目录结构
        self.fileSystemModel = QtWidgets.QFileSystemModel()
        self.fileSystemModel.setRootPath(QDir.currentPath())

        # 1、显示所有，包含目录和文件
        self.fileSystemModel.setNameFilters(['*'])

        # 2、二次过滤，只显示出文件
        self.fileSystemModel.setFilter(QDir.Files | QDir.NoDotAndDotDot | QDir.NoSymLinks)
        self.fileSystemModel.setNameFilterDisables(False)

        self.proxyModel = _SortFilterProxyModel()
        # 3、三次过滤，显示没有后缀的文件
        self.proxyModel.setFilterRegExp(QRegExp("^([^.]+)$", Qt.CaseInsensitive))
        self.proxyModel.setSourceModel(self.fileSystemModel)

        # 这里做展示
        self.setModel(self.proxyModel)
        sourceIndex = self.fileSystemModel.index(QDir.currentPath())
        self.setRootIndex(self.proxyModel.mapFromSource(sourceIndex))
        self.doubleClicked.connect(self.tree_cilcked)

        # 名字缩进
        self.setIndentation(10)

    def tree_cilcked(self, index):
        print(self.fileSystemModel.fileName(index))


if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = App()
    ex.show()
    sys.exit(app.exec_())

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