如何通过文件名过滤QFileSystemModel的文件列表？
如何通过文件名过滤QFileSystemModel的文件列表？
提问于 2019-06-17 07:56:59
我想要一个可以显示特定文件夹的管理器。假设我想筛选出没有扩展的文件夹。
尝试1: QFileSystemModel.setNameFilters()
... ...
# get file data
path = 'f:/tmp2'
dirModel = QtWidgets.QFileSystemModel()
dirModel.setRootPath(path)
dirModel.setFilter(QtCore.QDir.NoDotAndDotDot | QtCore.QDir.Dirs)
# filter folders
dirModel.setNameFilters(['*.asset'])
# worked. but i want the opposite: that folders do not contain ".asset".
#dirModel.setNameFilters(['(^\.asset)$'])
# regular expression is not work. nothing shows up.
# show window
... ... Try 2: QtCore.QSortFilterProxyModel()
... ...
# get file data
path = 'f:/tmp2'
dirModel = QtWidgets.QFileSystemModel()
dirModel.setRootPath(path)
dirModel.setFilter(QtCore.QDir.NoDotAndDotDot | QtCore.QDir.Dirs)
# filter folders
proxyModel = QtCore.QSortFilterProxyModel()
proxyModel.setSourceModel(dirModel)
proxyModel.setFilterRegExp("(^\.asset)$") # if no this line, all folders are displayed; add this line, nothing shows up.
# show window
... ...我试图修改正则表达式，但结果是一样的。
回答 1
Stack Overflow用户
回答已采纳
发布于 2019-06-17 08:34:21
setNameFilters()只支持通配符，不支持regex，所以它失败了。- 使用this answer实现了对没有扩展名的文件夹进行过滤。
import os
from PyQt5 import QtCore, QtGui, QtWidgets
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
path = os.path.join(os.path.dirname(os.path.realpath(__file__)), "56627022")
dirModel = QtWidgets.QFileSystemModel()
dirModel.setRootPath(QtCore.QDir.rootPath())
dirModel.setFilter(QtCore.QDir.NoDotAndDotDot | QtCore.QDir.Dirs)
view1 = QtWidgets.QTreeView()
view1.setModel(dirModel)
view1.setRootIndex(dirModel.index(path))
proxyModel = QtCore.QSortFilterProxyModel()
proxyModel.setSourceModel(dirModel)
proxyModel.setFilterRegExp(r"^([^.]+)$")
view2 = QtWidgets.QTreeView()
view2.setModel(proxyModel)
view2.setRootIndex(proxyModel.mapFromSource(dirModel.index(path)))
w = QtWidgets.QWidget()
hlay = QtWidgets.QHBoxLayout(w)
hlay.addWidget(view1)
hlay.addWidget(view2)
w.show()
sys.exit(app.exec_())
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原文链接：
https://stackoverflow.com/questions/56627022
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