问题:

I want to retrieve plain text from QLineEdit() object. The text method returns a QString object. I just want a simple string object. I am using pyqt4.

def n(self):
    new_label=QLineEdit()
    new_label.setText("txt")
    txt=self.new_label.text()
    self.name=txt

txt should be a simple string not QString.

回答1:

To convert one QString in Python 2, do this:

    self.name = unicode(self.new_label.text())

To automatically convert all QStrings, put this at the beginning of your code:

import sip
sip.setapi('QString', 2)
# must be before any pyqt imports

from PyQt4 import QtCore, QtGui

If you do this, there's no need to keep using unicode(), because all methods will return python strings instead of QStrings. And note that with Python 3, this behaviour is the default, so you would not need to do anything to always get python strings.