Minor fixes for py3k

examples/__main__.py

@@ -1,13 +1,12 @@
 import sys, os, subprocess, time
 
-try:
-    from . import initExample
-except ValueError:
-    #__package__ = os.path.split(os.path.dirname(__file__))[-1]
-    sys.excepthook(*sys.exc_info())
-    print("examples/ can not be executed as a script; please run 'python -m examples' instead.")
-    sys.exit(1)
+if __name__ == "__main__" and (__package__ is None or __package__==''):
+    parent_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+    sys.path.insert(0, parent_dir)
+    import examples
+    __package__ = "examples"
 
+from . import initExample
 from pyqtgraph.Qt import QtCore, QtGui, USE_PYSIDE
 
 if USE_PYSIDE:

pyqtgraph/functions.py

@@ -5,6 +5,7 @@ Copyright 2010  Luke Campagnola
 Distributed under MIT/X11 license. See license.txt for more infomation.
 """
 
+from __future__ import division
 from .python2_3 import asUnicode
 Colors = {
     'b': (0,0,255,255),
@@ -1864,9 +1865,9 @@ def isosurface(data, level):
     for i in [0,1,2]:
         vim = vertexInds[:,3] == i
         vi = vertexInds[vim, :3]
-        viFlat = (vi * (np.array(data.strides[:3]) / data.itemsize)[np.newaxis,:]).sum(axis=1)
+        viFlat = (vi * (np.array(data.strides[:3]) // data.itemsize)[np.newaxis,:]).sum(axis=1)
         v1 = dataFlat[viFlat]
-        v2 = dataFlat[viFlat + data.strides[i]/data.itemsize]
+        v2 = dataFlat[viFlat + data.strides[i]//data.itemsize]
         vertexes[vim,i] += (level-v1) / (v2-v1)
     
     ### compute the set of vertex indexes for each face. 
@@ -1892,7 +1893,7 @@ def isosurface(data, level):
     #p = debug.Profiler('isosurface', disabled=False)
     
     ## this helps speed up an indexing operation later on
-    cs = np.array(cutEdges.strides)/cutEdges.itemsize
+    cs = np.array(cutEdges.strides)//cutEdges.itemsize
     cutEdges = cutEdges.flatten()
 
     ## this, strangely, does not seem to help.

pyqtgraph/multiprocess/remoteproxy.py

@@ -932,8 +932,8 @@ class ObjectProxy(object):
     def __ilshift__(self, *args):
         return self._getSpecialAttr('__ilshift__')(*args, _callSync='off')
         
-    def __eq__(self, *args):
-        return self._getSpecialAttr('__eq__')(*args)
+    #def __eq__(self, *args):
+    #   return self._getSpecialAttr('__eq__')(*args)
 
     def __ne__(self, *args):
         return self._getSpecialAttr('__ne__')(*args)

pyqtgraph/opengl/GLViewWidget.py

@@ -139,7 +139,7 @@ class GLViewWidget(QtOpenGL.QGLWidget):
         else:
             items = item.childItems()
             items.append(item)
-        items.sort(lambda a,b: cmp(a.depthValue(), b.depthValue()))
+        items.sort(key=lambda x: x.depthValue())
         for i in items:
             if not i.visible():
                 continue
@@ -154,7 +154,7 @@ class GLViewWidget(QtOpenGL.QGLWidget):
                     ver = glGetString(GL_VERSION)
                     if ver is not None:
                         ver = ver.split()[0]
-                        if int(ver.split('.')[0]) < 2:
+                        if int(ver.split(b'.')[0]) < 2:
                             print(msg + " The original exception is printed above; however, pyqtgraph requires OpenGL version 2.0 or greater for many of its 3D features and your OpenGL version is %s. Installing updated display drivers may resolve this issue." % ver)
                         else:
                             print(msg)

pyqtgraph/opengl/__init__.py

@@ -23,8 +23,8 @@ from pyqtgraph import importAll
 
 importAll('items', globals(), locals())
 \
-from MeshData import MeshData
+from .MeshData import MeshData
 ## for backward compatibility:
 #MeshData.MeshData = MeshData  ## breaks autodoc.
 
-import shaders
+from . import shaders

pyqtgraph/opengl/items/GLLinePlotItem.py

@@ -83,7 +83,7 @@ class GLLinePlotItem(GLGraphicsItem):
                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
                 glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
                 
-            glDrawArrays(GL_LINE_STRIP, 0, self.pos.size / self.pos.shape[-1])
+            glDrawArrays(GL_LINE_STRIP, 0, int(self.pos.size / self.pos.shape[-1]))
         finally:
             glDisableClientState(GL_VERTEX_ARRAY)
     

pyqtgraph/opengl/items/GLScatterPlotItem.py

@@ -146,7 +146,7 @@ class GLScatterPlotItem(GLGraphicsItem):
                 else:
                     glNormal3f(self.size, 0, 0)  ## vertex shader uses norm.x to determine point size
                     #glPointSize(self.size)
-                glDrawArrays(GL_POINTS, 0, pos.size / pos.shape[-1])
+                glDrawArrays(GL_POINTS, 0, int(pos.size / pos.shape[-1]))
             finally:
                 glDisableClientState(GL_NORMAL_ARRAY)
                 glDisableClientState(GL_VERTEX_ARRAY)

pyqtgraph/opengl/items/GLSurfacePlotItem.py

@@ -1,5 +1,5 @@
 from OpenGL.GL import *
-from GLMeshItem import GLMeshItem
+from .GLMeshItem import GLMeshItem
 from .. MeshData import MeshData
 from pyqtgraph.Qt import QtGui
 import pyqtgraph as pg

pyqtgraph/opengl/shaders.py

@@ -354,7 +354,7 @@ class ShaderProgram(object):
         
     def uniform(self, name):
         """Return the location integer for a uniform variable in this program"""
-        return glGetUniformLocation(self.program(), name)
+        return glGetUniformLocation(self.program(), bytes(name,'utf_8'))
 
     #def uniformBlockInfo(self, blockName):
         #blockIndex = glGetUniformBlockIndex(self.program(), blockName)

pyqtgraph/widgets/RemoteGraphicsView.py

@@ -128,7 +128,7 @@ class Renderer(GraphicsView):
             self.shm = mmap.mmap(-1, mmap.PAGESIZE, self.shmtag) # use anonymous mmap on windows
         else:
             self.shmFile = tempfile.NamedTemporaryFile(prefix='pyqtgraph_shmem_')
-            self.shmFile.write('\x00' * mmap.PAGESIZE)
+            self.shmFile.write(b'\x00' * (mmap.PAGESIZE+1))
             fd = self.shmFile.fileno()
             self.shm = mmap.mmap(fd, mmap.PAGESIZE, mmap.MAP_SHARED, mmap.PROT_WRITE)
         atexit.register(self.close)