Fixes for Python3, PySide

functions.py

@@ -1260,7 +1260,7 @@ def isocurve(data, level, connected=False, extendToEdge=False, path=False):
         points[b[1]].append([b,a])
 
     ## rearrange into chains
-    for k in points.keys():
+    for k in list(points.keys()):
         try:
             chains = points[k]
         except KeyError:   ## already used this point elsewhere

graphicsItems/GraphicsItem.py

@@ -4,7 +4,7 @@ from pyqtgraph.Point import Point
 import pyqtgraph.functions as fn
 import weakref
 from pyqtgraph.pgcollections import OrderedDict
-import operator
+import operator, sys
 
 class FiniteCache(OrderedDict):
     """Caches a finite number of objects, removing
@@ -17,7 +17,7 @@ class FiniteCache(OrderedDict):
         self.pop(item, None) # make sure item is added to end
         OrderedDict.__setitem__(self, item, val) 
         while len(self) > self._length:
-            del self[self.keys()[0]]
+            del self[list(self.keys())[0]]
         
     def __getitem__(self, item):
         val = dict.__getitem__(self, item)
@@ -197,14 +197,14 @@ class GraphicsItem(object):
         
         ## check local cache
         if direction is None and dt == self._pixelVectorCache[0]:
-            return map(Point, self._pixelVectorCache[1])  ## return a *copy*
+            return tuple(map(Point, self._pixelVectorCache[1]))  ## return a *copy*
         
         ## check global cache
         key = (dt.m11(), dt.m21(), dt.m31(), dt.m12(), dt.m22(), dt.m32(), dt.m31(), dt.m32())
         pv = self._pixelVectorGlobalCache.get(key, None)
         if pv is not None:
             self._pixelVectorCache = [dt, pv]
-            return map(Point,pv)  ## return a *copy*
+            return tuple(map(Point,pv))  ## return a *copy*
         
         
         if direction is None:

graphicsItems/ROI.py

@@ -1808,7 +1808,7 @@ class LineSegmentROI(ROI):
         for i in range(len(imgPts)-1):
             d = Point(imgPts[i+1] - imgPts[i])
             o = Point(imgPts[i])
-            r = fn.affineSlice(data, shape=(int(d.length()),), vectors=[d.norm()], origin=o, axes=axes, order=1)
+            r = fn.affineSlice(data, shape=(int(d.length()),), vectors=[Point(d.norm())], origin=o, axes=axes, order=1)
             rgns.append(r)
             
         return np.concatenate(rgns, axis=axes[0])

graphicsItems/ScatterPlotItem.py

@@ -41,7 +41,7 @@ def drawSymbol(painter, symbol, size, pen, brush):
     if isinstance(symbol, basestring):
         symbol = Symbols[symbol]
     if np.isscalar(symbol):
-        symbol = Symbols.values()[symbol % len(Symbols)]
+        symbol = list(Symbols.values())[symbol % len(Symbols)]
     painter.drawPath(symbol)
 
     

graphicsItems/ViewBox/ViewBox.py

@@ -1198,7 +1198,7 @@ class ViewBox(GraphicsWidget):
         if ViewBox is None:     ## can happen as python is shutting down
             return
         ## Called with ID and name of view (the view itself is no longer available)
-        for v in ViewBox.AllViews.keys():
+        for v in list(ViewBox.AllViews.keys()):
             if id(v) == vid:
                 ViewBox.AllViews.pop(v)
                 break

multiprocess/bootstrap.py

@@ -4,13 +4,19 @@ import sys, pickle, os
 if __name__ == '__main__':
     if hasattr(os, 'setpgrp'):
         os.setpgrp()  ## prevents signals (notably keyboard interrupt) being forwarded from parent to this process
-    name, port, authkey, ppid, targetStr, path = pickle.load(sys.stdin)
+    if sys.version[0] == '3':
+        name, port, authkey, ppid, targetStr, path, pyside = pickle.load(sys.stdin.buffer)        
+    else:
+        name, port, authkey, ppid, targetStr, path, pyside = pickle.load(sys.stdin)
     #print "key:",  ' '.join([str(ord(x)) for x in authkey])
     if path is not None:
         ## rewrite sys.path without assigning a new object--no idea who already has a reference to the existing list.
         while len(sys.path) > 0:
             sys.path.pop()
         sys.path.extend(path)
+        
+    if pyside:
+        import PySide
     #import pyqtgraph
     #import pyqtgraph.multiprocess.processes
     target = pickle.loads(targetStr)  ## unpickling the target should import everything we need

multiprocess/parallelizer.py

@@ -1,6 +1,6 @@
 import os, sys, time, multiprocessing, re
-from processes import ForkedProcess
-from remoteproxy import ClosedError
+from .processes import ForkedProcess
+from .remoteproxy import ClosedError
 
 class CanceledError(Exception):
     """Raised when the progress dialog is canceled during a processing operation."""

multiprocess/processes.py

@@ -1,7 +1,11 @@
-from remoteproxy import RemoteEventHandler, ClosedError, NoResultError, LocalObjectProxy, ObjectProxy
+from .remoteproxy import RemoteEventHandler, ClosedError, NoResultError, LocalObjectProxy, ObjectProxy
 import subprocess, atexit, os, sys, time, random, socket, signal
-import cPickle as pickle
 import multiprocessing.connection
+from pyqtgraph.Qt import USE_PYSIDE
+try:
+    import cPickle as pickle
+except ImportError:
+    import pickle
 
 __all__ = ['Process', 'QtProcess', 'ForkedProcess', 'ClosedError', 'NoResultError']
 
@@ -75,7 +79,10 @@ class Process(RemoteEventHandler):
         targetStr = pickle.dumps(target)  ## double-pickle target so that child has a chance to 
                                           ## set its sys.path properly before unpickling the target
         pid = os.getpid() # we must sent pid to child because windows does not have getppid
-        pickle.dump((name+'_child', port, authkey, pid, targetStr, sysPath), self.proc.stdin)
+        pyside = USE_PYSIDE
+        
+        ## Send everything the remote process needs to start correctly
+        pickle.dump((name+'_child', port, authkey, pid, targetStr, sysPath, pyside), self.proc.stdin)
         self.proc.stdin.close()
         
         ## open connection for remote process

multiprocess/remoteproxy.py

@@ -1,6 +1,11 @@
-import os, __builtin__, time, sys, traceback, weakref
-import cPickle as pickle
+import os, time, sys, traceback, weakref
 import numpy as np
+try:
+    import __builtin__ as builtins
+    import cPickle as pickle
+except ImportError:
+    import builtins
+    import pickle
 
 class ClosedError(Exception):
     """Raised when an event handler receives a request to close the connection
@@ -181,7 +186,7 @@ class RemoteEventHandler(object):
             elif cmd == 'import':
                 name = opts['module']
                 fromlist = opts.get('fromlist', [])
-                mod = __builtin__.__import__(name, fromlist=fromlist)
+                mod = builtins.__import__(name, fromlist=fromlist)
                 
                 if len(fromlist) == 0:
                     parts = name.lstrip('.').split('.')

widgets/RemoteGraphicsView.py

@@ -27,7 +27,7 @@ class RemoteGraphicsView(QtGui.QWidget):
         rpgRemote = self._proc._import('pyqtgraph.widgets.RemoteGraphicsView')
         self._view = rpgRemote.Renderer(*args, **kwds)
         self._view._setProxyOptions(deferGetattr=True)
-        self.setFocusPolicy(self._view.focusPolicy())
+        self.setFocusPolicy(QtCore.Qt.FocusPolicy(self._view.focusPolicy()))
         self.setSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
         self.setMouseTracking(True)
         self.shm = None