Fix: avoid importing py3 module from pyqt when using py2

examples/py2exe/setup.py

@@ -12,6 +12,10 @@ includes = ['PyQt4', 'PyQt4.QtGui', 'PyQt4.QtSvg', 'sip', 'pyqtgraph.graphicsIte
 excludes = ['_gtkagg', '_tkagg', 'bsddb', 'curses', 'email', 'pywin.debugger',
             'pywin.debugger.dbgcon', 'pywin.dialogs', 'tcl',
             'Tkconstants', 'Tkinter', 'zmq']
+if sys.version[0] == '2':
+    # causes syntax error on py2
+    excludes.append('PyQt4.uic.port_v3')
+
 packages = []
 dll_excludes = ['libgdk-win32-2.0-0.dll', 'libgobject-2.0-0.dll', 'tcl84.dll',
                 'tk84.dll', 'MSVCP90.dll']
@@ -25,7 +29,7 @@ setup(
   options={"py2exe": {"excludes": excludes,
                       "includes": includes,
                       "dll_excludes": dll_excludes,
-                      "optimize": 2,
+                      "optimize": 0,
                       "compressed": 2,
                       "bundle_files": 1}},
   zipfile=None,