我有一个工作程序，用Pandas解析excel中的数据。我尝试了几种方法在Qtextedit中显示输出数据帧，但是永远无法正确显示格式。简而言之，我在网上找到了一个可以很好地运行的自定义小部件的解决方法。我遇到的问题是我找到的解决方法示例将在其自己的窗口中正确显示我的数据，但我无法弄清楚如何将小部件添加到我的应用程序。这似乎是一个OOP问题。我正在学习，但不能完全掌握问题所在。
下面是我尝试添加到主应用程序的示例窗口小部件。
''' ps_QAbstractTableModel_solvents.py
use PySide's QTableView and QAbstractTableModel for tabular data
sort columns by clicking on the header title
here applied to solvents commonly used in Chemistry
PySide is the official LGPL-licensed version of PyQT
tested with PySide112 and Python27/Python33 by vegaseat 15feb2013
'''
import operator
from PySide.QtCore import *
from PySide.QtGui import *
class MyWindow(QWidget):
def __init__(self, data_list, header, *args):
QWidget.__init__(self, *args)
# setGeometry(x_pos, y_pos, width, height)
self.setGeometry(300, 200, 570, 450)
self.setWindowTitle("Widget Title.")
table_model = MyTableModel(self, data_list, header)
table_view = QTableView()
table_view.setModel(table_model)
# set font
font = QFont("Courier New", 14)
table_view.setFont(font)
# set column width to fit contents (set font first!)
table_view.resizeColumnsToContents()
# enable sorting
table_view.setSortingEnabled(True)
layout = QVBoxLayout(self)
layout.addWidget(table_view)
self.setLayout(layout)
class MyTableModel(QAbstractTableModel):
def __init__(self, parent, mylist, header, *args):
QAbstractTableModel.__init__(self, parent, *args)
self.mylist = mylist
self.header = header
def rowCount(self, parent):
return len(self.mylist)
def columnCount(self, parent):
return len(self.mylist[0])
def data(self, index, role):
if not index.isValid():
return None
elif role != Qt.DisplayRole:
return None
return self.mylist[index.row()][index.column()]
def headerData(self, col, orientation, role):
if orientation == Qt.Horizontal and role == Qt.DisplayRole:
return self.header[col]
return None
def sort(self, col, order):
"""sort table by given column number col"""
self.emit(SIGNAL("layoutAboutToBeChanged()"))
self.mylist = sorted(self.mylist,
key=operator.itemgetter(col))
if order == Qt.DescendingOrder:
self.mylist.reverse()
self.emit(SIGNAL("layoutChanged()"))
# the solvent data ...
header = ['Solvent Name', ' BP (deg C)', ' MP (deg C)', ' Density (g/ml)']
# use numbers for numeric data to sort properly
data_list = [
('ACETIC ACID', 117.9, 16.7, 1.049),
('ACETIC ANHYDRIDE', 140.1, -73.1, 1.087),
('ACETONE', 56.3, -94.7, 0.791),
('ACETONITRILE', 81.6, -43.8, 0.786),
('ANISOLE', 154.2, -37.0, 0.995),
('BENZYL ALCOHOL', 205.4, -15.3, 1.045),
('BENZYL BENZOATE', 323.5, 19.4, 1.112),
('BUTYL ALCOHOL NORMAL', 117.7, -88.6, 0.81),
('BUTYL ALCOHOL SEC', 99.6, -114.7, 0.805),
]
app = QApplication([])
win = MyWindow(data_list, header)
win.show()
app.exec_()
以下是我尝试将小部件添加到PyQT应用程序时尝试的内容。
#from PySide.QtCore import *
import sys
from PySide import QtCore, QtGui
import operator
##############################THIS IS THE EXAMPLE###############
# from PySide.QtCore import *
# from PySide.QtGui import *
class MyWindow(QtGui.QWidget): #changed from QWidget to QtGui.QWidget because of import difference.
def __init__(self, data_list, header, *args):
QtGui.QWidget.__init__(self, *args) #added QtGui. to QWidget..
# setGeometry(x_pos, y_pos, width, height)
self.setGeometry(300, 200, 570, 450)
self.setWindowTitle("Widget Title.")
table_model = MyTableModel(self, data_list, header)
table_view = QtGui.QTableView() #Added QtGui. to QTableView..
table_view.setModel(table_model)
# set font
font = QtGui.QFont("Courier New", 14) #Added QtGui. to QFont..
table_view.setFont(font)
# set column width to fit contents (set font first!)
table_view.resizeColumnsToContents()
# enable sorting
table_view.setSortingEnabled(True)
layout = QtGui.QVBoxLayout(self) #Added QtGui. to QVBox..
layout.addWidget(table_view)
self.setLayout(layout)
class MyTableModel(QtCore.QAbstractTableModel): #changed from QAbstractTableModel to QtCore.QAbstractTableModel
def __init__(self, parent, mylist, header, *args):
QtCore.QAbstractTableModel.__init__(self, parent, *args) #changed from QAbstract to QtCore.QAbstract
self.mylist = mylist
self.header = header
def rowCount(self, parent):
return len(self.mylist)
def columnCount(self, parent):
return len(self.mylist[0])
def data(self, index, role):
if not index.isValid():
return None
elif role != QtCore.Qt.DisplayRole: #Added QtCore. to Qt.Display..
return None
return self.mylist[index.row()][index.column()]
def headerData(self, col, orientation, role):
if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole: #Added QtCore. to Qt.Horiz.. and Qt.Display..
return self.header[col]
return None
def sort(self, col, order):
"""sort table by given column number col"""
self.emit(QtCore.SIGNAL("layoutAboutToBeChanged()")) #Added QtCore. to SIGNAL..
self.mylist = sorted(self.mylist,
key=operator.itemgetter(col))
if order == QtCore.Qt.DescendingOrder: #added QtCore. to Qt.Descending...
self.mylist.reverse()
self.emit(QtCore.SIGNAL("layoutChanged()"))
# the solvent data ...
header = ['Solvent Name', ' BP (deg C)', ' MP (deg C)', ' Density (g/ml)']
# use numbers for numeric data to sort properly
data_list = [
('ACETIC ACID', 117.9, 16.7, 1.049),
('ACETIC ANHYDRIDE', 140.1, -73.1, 1.087),
('ACETONE', 56.3, -94.7, 0.791),
('ACETONITRILE', 81.6, -43.8, 0.786),
('ANISOLE', 154.2, -37.0, 0.995),
('BENZYL ALCOHOL', 205.4, -15.3, 1.045),
('BENZYL BENZOATE', 323.5, 19.4, 1.112),
('BUTYL ALCOHOL NORMAL', 117.7, -88.6, 0.81),
('BUTYL ALCOHOL SEC', 99.6, -114.7, 0.805),
]
# app = QApplication([])
# win = MyWindow(data_list, header)
# win.show()
# app.exec_()
###############################END EXAMPLE############################
######################THIS IS THE GUI FILE######################
class Ui_mainForm(object):
def setupUi(self, mainForm):
mainForm.setObjectName("mainForm")
mainForm.resize(1075, 643)
self.pushButton = QtGui.QPushButton(mainForm)
self.pushButton.setGeometry(QtCore.QRect(510, 40, 93, 31))
self.pushButton.setObjectName("pushButton")
self.lineEdit = QtGui.QLineEdit(mainForm)
self.lineEdit.setGeometry(QtCore.QRect(40, 40, 451, 31))
self.lineEdit.setObjectName("lineEdit")
self.lineEdit_2 = QtGui.QLineEdit(mainForm)
self.lineEdit_2.setGeometry(QtCore.QRect(40, 90, 451, 31))
self.lineEdit_2.setObjectName("lineEdit_2")
self.pushButton_2 = QtGui.QPushButton(mainForm)
self.pushButton_2.setGeometry(QtCore.QRect(510, 90, 93, 31))
self.pushButton_2.setObjectName("pushButton_2")
self.procButton = QtGui.QPushButton(mainForm)
self.procButton.setGeometry(QtCore.QRect(260, 130, 93, 28))
self.procButton.setObjectName("procButton")
self.placeholderWidget = QtGui.QWidget (MyWindow(data_list, header)) ############Trying to activate the custom class in gui.. was mainForm
self.placeholderWidget.setGeometry(QtCore.QRect(20, 179, 1011, 451))
self.placeholderWidget.setObjectName("placeholderWidget")
self.placeholderWidget.setAutoFillBackground(True)
self.retranslateUi(mainForm)
QtCore.QMetaObject.connectSlotsByName(mainForm)
def retranslateUi(self, mainForm):
mainForm.setWindowTitle(QtGui.QApplication.translate("mainForm", "Parser", None, QtGui.QApplication.UnicodeUTF8))
self.pushButton.setText(QtGui.QApplication.translate("mainForm", "Browse", None, QtGui.QApplication.UnicodeUTF8))
self.lineEdit.setPlaceholderText(QtGui.QApplication.translate("mainForm", "Select report", None, QtGui.QApplication.UnicodeUTF8))
self.lineEdit_2.setPlaceholderText(QtGui.QApplication.translate("mainForm", "Select log file", None, QtGui.QApplication.UnicodeUTF8))
self.pushButton_2.setText(QtGui.QApplication.translate("mainForm", "Browse", None, QtGui.QApplication.UnicodeUTF8))
self.procButton.setText(QtGui.QApplication.translate("mainForm", "Process files", None, QtGui.QApplication.UnicodeUTF8))
self.placeholderWidget.setToolTip(QtGui.QApplication.translate("mainForm", "THIS IS TOOLTIP", None, QtGui.QApplication.UnicodeUTF8))
###############THIS IS THE MAIN PROGRAM####################
class MainDialog(QtGui.QDialog, Ui_mainForm, MyWindow, MyTableModel): #Attempting to add custom widget to main window. getting error "Internal C++ object (PySide.QtGui.QWidget) already deleted."
def __init__(self, parent=None):
super(MainDialog, self).__init__(parent)
self.setupUi(self)
app = QtGui.QApplication(sys.argv) #Changed from QApplication to QtGui.QApplication because of different import method from seperate gui file.
mainForm = MainDialog()
mainForm.show()
# win = MyWindow(data_list, header) #These two lines display the custom example widget outside of the main window.
# win.show() #These two lines display the custom example widget outside of the main window.
app.exec_()
##########END MAIN PROGRAM##########
# app = QtGui.QApplication([]) #Added QtGui. to QApplication
# win = MyWindow(data_list, header) #Now to somehow add this to main window............
# win.show()
# app.exec_()
我无法让自定义小部件出现在主应用程序中。另外，我在执行时收到错误消息。以下是完整的错误消息。
C:\Python27\python.exe C:/Users/Dirk/PycharmProjects/QwidgetTest_fromExample/Attempt-incorporate-example2.py
Traceback (most recent call last):
File "C:/Users/Dirk/PycharmProjects/QwidgetTest_fromExample/Attempt-incorporate-example2.py", line 143, in <module>
mainForm = MainDialog()
File "C:/Users/Dirk/PycharmProjects/QwidgetTest_fromExample/Attempt-incorporate-example2.py", line 139, in __init__
self.setupUi(self)
File "C:/Users/Dirk/PycharmProjects/QwidgetTest_fromExample/Attempt-incorporate-example2.py", line 116, in setupUi
self.placeholderWidget.setGeometry(QtCore.QRect(20, 179, 1011, 451))
RuntimeError: Internal C++ object (PySide.QtGui.QWidget) already deleted.
Process finished with exit code 1