这段代码的目的是显示一个字符串列表,其中包含从QtCore.QAbstractListModel
继承的模型
import sys
from PyQt4 import QtGui, QtCore
class StringListModel(QtCore.QAbstractListModel):
def __init__(self, strings):
QtCore.QAbstractListModel.__init__(self)
self._string_list = strings
def rowCount(self):
return len(self._string_list)
def data(self, index, role):
if not index.isValid() : return QtCore.QVariant()
if role != QtCore.Qt.DisplayRole : return QtCore.QVariant()
if index.row() <= self.rowCount() : return QtCore.QVariant()
return QtCore.QVariant(self._string_list[index.row()])
def headerData(self, section, orientation, role = QtCore.Qt.DisplayRole):
if role != QtCore.Qt.DisplayRole : return QtCore.QVariant()
if orientation == QtCore.Qt.Horizontal : return QtCore.QVariant("Column %s"%section)
else:
return QtCore.QVariant("Row %s"%section)
if __name__ == '__main__':
a = QtGui.QApplication(sys.argv)
lines = ["item 1", "item 2", "item 3"]
model = StringListModel(lines)
view = QtGui.QListView()
view.setModel(model)
view.setWindowTitle("String list model")
view.show()
a.exec_()
我的错误是
TypeError: rowCount() takes exactly 1 positional argument (2 given)
问题是QAbstractItemModel.rowCount接受“parent”参数。下面的调整抑制了错误(尽管我不知道它是否真正实现了正确的逻辑)
另外,您确定QListWidget没有提供您需要的功能吗?在
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