How to read from QTextedit in python?

Question

I created the GUI using QTDesigner and save the file as .ui extension. Then convert the file to .py file using the following code

pyuic4 -x test.ui -o test.py 

Now I want to integrate my project code to this test.py file. Since I am new to pyqt4, I dont know how to read text from text edit and save to file and viceversa. Following is my code.

from PyQt4 import QtCore, QtGui  
from final_ar_gui import *

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    _fromUtf8 = lambda s: s

class Ui_AnaphoraResolution(object):  

  def setupUi(self, AnaphoraResolution):
    AnaphoraResolution.setObjectName(_fromUtf8("AnaphoraResolution"))
    AnaphoraResolution.resize(608, 620)
    self.textEdit = QtGui.QTextEdit(AnaphoraResolution)
    self.textEdit.setGeometry(QtCore.QRect(0, 110, 271, 341))
    self.textEdit.setObjectName(_fromUtf8("textEdit"))
    self.textEdit_2 = QtGui.QTextEdit(AnaphoraResolution)
    self.textEdit_2.setGeometry(QtCore.QRect(310, 110, 271, 341))
    self.textEdit_2.setObjectName(_fromUtf8("textEdit_2"))
    self.pushButton = QtGui.QPushButton(AnaphoraResolution)
    self.pushButton.setGeometry(QtCore.QRect(40, 470, 91, 27))
    self.pushButton.setObjectName(_fromUtf8("pushButton"))
    self.pushButton_2 = QtGui.QPushButton(AnaphoraResolution)
    self.pushButton_2.setGeometry(QtCore.QRect(170, 470, 171, 27))
    self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
    self.pushButton_3 = QtGui.QPushButton(AnaphoraResolution)
    self.pushButton_3.setGeometry(QtCore.QRect(370, 470, 81, 27))
    self.pushButton_3.setObjectName(_fromUtf8("pushButton_3"))
    self.pushButton_4 = QtGui.QPushButton(AnaphoraResolution)
    self.pushButton_4.setGeometry(QtCore.QRect(480, 470, 98, 27))
    self.pushButton_4.setObjectName(_fromUtf8("pushButton_4"))
    self.label = QtGui.QLabel(AnaphoraResolution)
    self.label.setGeometry(QtCore.QRect(180, 30, 241, 20))
    self.label.setObjectName(_fromUtf8("label"))

    self.retranslateUi(AnaphoraResolution)
    self.connectActions()
    QtCore.QMetaObject.connectSlotsByName(AnaphoraResolution)

 def retranslateUi(self, AnaphoraResolution):
    AnaphoraResolution.setWindowTitle(QtGui.QApplication.translate("AnaphoraResolution", "Dialog", None, QtGui.QApplication.UnicodeUTF8))
    self.pushButton.setText(QtGui.QApplication.translate("AnaphoraResolution", "Enter", None, QtGui.QApplication.UnicodeUTF8))
    self.pushButton_2.setText(QtGui.QApplication.translate("AnaphoraResolution", "Pronominal Resolution", None, QtGui.QApplication.UnicodeUTF8))
    self.pushButton_3.setText(QtGui.QApplication.translate("AnaphoraResolution", "Clear", None, QtGui.QApplication.UnicodeUTF8))
    self.pushButton_4.setText(QtGui.QApplication.translate("AnaphoraResolution", "Quit", None, QtGui.QApplication.UnicodeUTF8))
    self.label.setText(QtGui.QApplication.translate("AnaphoraResolution", "Anaphora Resolution in Malayalam", None, QtGui.QApplication.UnicodeUTF8))

 def connectActions(self):

    self.pushButton.clicked.connect(self.ent)
 def ent(self):

    %Dont know what code to write


if __name__ == "__main__":
  import sys
  app = QtGui.QApplication(sys.argv)
  AnaphoraResolution = QtGui.QDialog()
  ui = Ui_AnaphoraResolution()
  ui.setupUi(AnaphoraResolution)
  AnaphoraResolution.show()
  sys.exit(app.exec_())  

When i click enter (push button) the input in the textEdit is read and save into a file named input.txt. When i click quit (pushbutton) the output in the outfile.txt is read and write into textEdit_2 . How to solve this ?

Answer 1

If all you need is the displayed text in your QTextEdit widget, you can access that by using the toPlainText() method on the widget you need the text from.

Example:

mytext = self.textEdit.toPlainText()

At this point, you can do whatever you want with mytext. You can write it to a file, you can manipulated it, etc.

If you need to (re)populate your QTextEdit with the modified value of mytext, you can do that by using setPlainText

self.textEdit.setPlainText(mytext)

To write the string to a file, you'll do something like this:

with open('somefile.txt', 'a') as f:
    f.write(mytext)

This will append mytext to somefile.txt