title: ImportError: cannot import name pyqtSignal?
body: <p>Background on the question: This is a previous PyQt project I am working on and trying to start the GUI. I have set an Anaconda Environment with Python 2.7 and used PyQt4. The Error is :-</p>
  
  <p><code>File "gui/gui.py", line 26, in &lt;module&gt;
          from qtpy.QtCore import (Qt, QFileSystemWatcher, QSettings, pyqtSignal)
      ImportError: cannot import name pyqtSignal</code> </p>
  
  <p>Code :- </p>
  
  <pre><code>enter #import qt
  from qtpy import QtCore, QtWidgets, QtGui, PYQT4 #changed from PYQT5
  from qtpy.QtCore import (Qt, QFileSystemWatcher, QSettings, pyqtSignal)
  </code></pre>
  
  <p>Even after trying to setup the environment and other aspects to the best of my ability, I am unable to pinpoint why this error still pops up.Tried on Mac, it errors out similarly even on Ubuntu. Does anyone have an idea how  to tackle this?</p>