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#############################################################################
##
## Copyright (C) 2021 The Qt Company Ltd.
## Contact: https://www.qt.io/licensing/
##
## This file is part of the Qt for Python examples of the Qt Toolkit.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of The Qt Company Ltd nor the names of its
## contributors may be used to endorse or promote products derived
## from this software without specific prior written permission.
##
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
##
## $QT_END_LICENSE$
##
#############################################################################
import pandas as pd
from PySide6.QtWidgets import QTableView, QApplication
from PySide6.QtCore import QAbstractTableModel, Qt, QModelIndex
import sys
class PandasModel(QAbstractTableModel):
"""A model to interface a Qt view with pandas dataframe """
def __init__(self, dataframe: pd.DataFrame, parent=None):
QAbstractTableModel.__init__(self, parent)
self._dataframe = dataframe
def rowCount(self, parent=QModelIndex()) -> int:
""" Override method from QAbstractTableModel
Return row count of the pandas DataFrame
"""
if parent == QModelIndex():
return len(self._dataframe)
return 0
def columnCount(self, parent=QModelIndex()) -> int:
"""Override method from QAbstractTableModel
Return column count of the pandas DataFrame
"""
if parent == QModelIndex():
return len(self._dataframe.columns)
return 0
def data(self, index: QModelIndex, role=Qt.ItemDataRole):
"""Override method from QAbstractTableModel
Return data cell from the pandas DataFrame
"""
if not index.isValid():
return None
if role == Qt.DisplayRole:
return str(self._dataframe.iloc[index.row(), index.column()])
return None
def headerData(
self, section: int, orientation: Qt.Orientation, role: Qt.ItemDataRole
):
"""Override method from QAbstractTableModel
Return dataframe index as vertical header data and columns as horizontal header data.
"""
if role == Qt.DisplayRole:
if orientation == Qt.Horizontal:
return str(self._dataframe.columns[section])
if orientation == Qt.Vertical:
return str(self._dataframe.index[section])
return None
if __name__ == "__main__":
app = QApplication(sys.argv)
df = pd.read_csv("iris.csv")
view = QTableView()
view.resize(800, 500)
view.horizontalHeader().setStretchLastSection(True)
view.setAlternatingRowColors(True)
view.setSelectionBehavior(QTableView.SelectRows)
model = PandasModel(df)
view.setModel(model)
view.show()
app.exec()
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