Python 3 bugfixes

README.txt

@@ -13,6 +13,7 @@ Contributors:
     Michael Cristopher Hogg
     Ulrich Leutner
     Felix Schill
+    Guillaume Poulin
 
 Requirements:
     PyQt 4.7+ or PySide

examples/__main__.py

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

pyqtgraph/__init__.py

@@ -316,7 +316,7 @@ def dbg():
     Create a console window and begin watching for exceptions.
     """
     mkQApp()
-    import console
+    from . import console
     c = console.ConsoleWidget()
     c.catchAllExceptions()
     c.show()

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),
@@ -1863,9 +1864,9 @@ 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. 
@@ -1891,7 +1892,7 @@ 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

@@ -1014,6 +1014,10 @@ class ObjectProxy(object):
     def __rmod__(self, *args):
         return self._getSpecialAttr('__rmod__')(*args)
         
+    def __hash__(self):
+        ## Required for python3 since __eq__ is defined.
+        return id(self)
+        
 class DeferredObjectProxy(ObjectProxy):
     """
     This class represents an attribute (or sub-attribute) of a proxied object.

pyqtgraph/opengl/GLViewWidget.py

@@ -185,7 +185,7 @@ 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

@@ -93,7 +93,7 @@ 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_COLOR_ARRAY)
             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

@@ -1,4 +1,7 @@
-import OpenGL
+try:
+    from OpenGL import NullFunctionError
+except ImportError:
+    from OpenGL.error import NullFunctionError
 from OpenGL.GL import *
 from OpenGL.GL import shaders
 import re
@@ -219,17 +222,20 @@ class Shader(object):
         if self.compiled is None:
             try:
                 self.compiled = shaders.compileShader(self.code, self.shaderType)
-            except OpenGL.NullFunctionError:
+            except NullFunctionError:
-                raise Exception("This OpenGL implementation does not support shader programs; many features on pyqtgraph will not work.")
+                raise Exception("This OpenGL implementation does not support shader programs; many OpenGL features in pyqtgraph will not work.")
             except RuntimeError as exc:
                 ## Format compile errors a bit more nicely
                 if len(exc.args) == 3:
                     err, code, typ = exc.args
                     if not err.startswith('Shader compile failure'):
                         raise
-                    code = code[0].split('\n')
+                    code = code[0].decode('utf_8').split('\n')
                     err, c, msgs = err.partition(':')
                     err = err + '\n'
+                    msgs = re.sub('b\'','',msgs)
+                    msgs = re.sub('\'$','',msgs)
+                    msgs = re.sub('\\\\n','\n',msgs)
                     msgs = msgs.split('\n')
                     errNums = [()] * len(code)
                     for i, msg in enumerate(msgs):
@@ -357,7 +363,7 @@ 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(), name.encode('utf_8'))
 
     #def uniformBlockInfo(self, blockName):
         #blockIndex = glGetUniformBlockIndex(self.program(), blockName)

pyqtgraph/widgets/RawImageWidget.py

@@ -1,6 +1,7 @@
 from pyqtgraph.Qt import QtCore, QtGui
 try:
     from pyqtgraph.Qt import QtOpenGL
+    from OpenGL.GL import *
     HAVE_OPENGL = True
 except ImportError:
     HAVE_OPENGL = False
@@ -59,7 +60,6 @@ class RawImageWidget(QtGui.QWidget):
         p.end()
 
 if HAVE_OPENGL:
-    from OpenGL.GL import *
     class RawImageGLWidget(QtOpenGL.QGLWidget):
         """
         Similar to RawImageWidget, but uses a GL widget to do all drawing.

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)