<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def on_leTitle_textChanged(self):
 """Unlock the Next button .. note:: This is an automatic Qt slot executed when the title value changes. """

        self.parent.pbnNext.setEnabled(bool(self.leTitle.text()))