PYQT4無法寫入excelwriter

Question

我有一個在pyqt4中創建的gui，它有一個函數可以調用應該使用pandas excelwriter寫入excel表格的模塊。出於某種原因，它會創建工作表，但不會寫入任何內容。它只是在沒有任何錯誤的情況下崩潰了我的qui。當我在調試模式下運行它時，顯然它沒有任何問題。過去幾天我一直在調試，現在指出pyqt和excelwriter之間的問題。是否有一個已知的問題，pyqt不喜歡熊貓excelwriter？

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

下面的代碼適用於我。也就是說，我點擊updateALL按鈕後，它打印此：

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

並查看生成的文件表明這一點：

注意，我不得不修復了不少的bug來讓你的例子工作。因此，請確保您使用所有當你測試以下文件：

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)) 

Answer 2

你writer.save()語句是with ExcelWriter(...) as writer:塊之外。嘗試使用塊內的語句來運行它。

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()