excel - PYQT4无法写入excelwriter

Question

我有一个在 pyqt4 中创建的 gui，它有一个函数来调用一个模块，该模块应该使用 pandas excelwriter 写入 Excel 工作表。由于某种原因，它创建工作表但不向其中写入任何内容。它只是让我的 qui 崩溃，没有任何错误。当我在 Debug模式下运行它时，它显然没有任何问题。过去几天我一直在调试这个问题，现在指出了 pyqt 和 excelwriter 之间的问题。是否存在 pyqt 不喜欢 pandas excelwriter 的已知问题？

from PyQt4 import QtCore,QtGui  
import sys
from MAIN_GUI import *

if __name__=="__main__":
    app = Qt.Gui.QApplication(sys.argv)


class MAIN_GUI(QtGui.QMainWindow):
        def __init__self:
            super(MAIN_GUI, self.__init__:
            self.uiM=Ui_MainWindow
            self.uiM.setupUi(self)
            self.connect(self.uiM.updateALL_Button,QtCore.SIGNAL('clicked()'),self.updateALLEXCEL)

def updateALLEXCEL(self):
    import excel_dummy

main_gui = MAIN_GUI()
main_gui.show()
main_gui.raise_()
sys.exit(app.exec_())

---excel_dummy.py---

import pandas as pd
from pandas import ExcelWriter

def excelify():
    with ExcelWriter('/home/Desktop/Excelified/final.xlsx', engine='xlsxwriter') as writer:

        workbook=writer.book
        worksheet=workbook.add_worksheet()
        worksheet.write(2,2,'just write something')
    writer.save()
excelify()

---MAIN_GUI.py---

from PyQt4 import QtCore,QtGui
try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s

try:
    _encoding = QtGui.QApplication.unicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(320,201)
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.updateALL_Button = QtGui.QPushButton(self.centralwidget)
        self.updateALL_Button.setGeometry(QtCore.QRect(40,110,161,27))
        self.updateALL_Button.setFocusPolicy(QtCore.Qt.NoFocus)
        self.updateAll_Button.setObjectName(_fromUtf8("Options_updateALL_Button"))
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtGui.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 320, 24))
        self.menubar.setObjectName(_fromUtf8("menubar"))
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName(_fromUtf8("statusbar"))
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self,MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
        self.updateALL_Button.setText(_translate("MainWindow", "updateALL", None))

Answer 1

下面的代码对我有用。也就是说，在我单击 updateALL 按钮后，它会打印以下内容:

file size: 5259 "/tmp/final.xlsx"

查看生成的文件会显示以下内容:

请注意，我必须修复很多错误才能使您的示例正常工作。因此，请确保在测试时使用以下所有文件:

main.py:

import sys
from MAIN_GUI import *
from PyQt4 import QtGui, QtCore

if __name__=="__main__":
    app = QtGui.QApplication(sys.argv)


class MAIN_GUI(QtGui.QMainWindow):
    def __init__(self):
        super(MAIN_GUI, self).__init__()
        self.uiM = Ui_MainWindow()
        self.uiM.setupUi(self)
        self.connect(self.uiM.updateALL_Button,QtCore.SIGNAL('clicked()'),self.updateALLEXCEL)

    def updateALLEXCEL(self):
        try:
            import excel_dummy
        except:
            from traceback import format_exception
            msg = ''.join(format_exception(*sys.exc_info()))
            mb = QtGui.QMessageBox()
            mb.setWindowTitle('Error')
            mb.setText('Click Show Details to get the Traceback')
            mb.setDetailedText(msg)
            mb.exec_()


main_gui = MAIN_GUI()
main_gui.show()
main_gui.raise_()
sys.exit(app.exec_())

excel_dummy.py:

import os, pandas as pd
from pandas import ExcelWriter

def excelify():
    path = '/tmp/final.xlsx'
    with ExcelWriter(path, engine='xlsxwriter') as writer:
        workbook = writer.book
        worksheet = workbook.add_worksheet()
        worksheet.write(2, 2, 'just write something')
        writer.save()
    print('file size: %s "%s"' % (os.stat(path).st_size, path))

excelify()

MAIN_GUI.py:

from PyQt4 import QtCore,QtGui
try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s

try:
    _encoding = QtGui.QApplication.unicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(320,201)
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.updateALL_Button = QtGui.QPushButton(self.centralwidget)
        self.updateALL_Button.setGeometry(QtCore.QRect(40,110,161,27))
        self.updateALL_Button.setFocusPolicy(QtCore.Qt.NoFocus)
        self.updateALL_Button.setObjectName(_fromUtf8("Options_updateALL_Button"))
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtGui.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 320, 24))
        self.menubar.setObjectName(_fromUtf8("menubar"))
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName(_fromUtf8("statusbar"))
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self,MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
        self.updateALL_Button.setText(_translate("MainWindow", "updateALL", None))