Miscellaneous fixes to the examples to make them run on both Python 3.x and Python 2.x

Author: cgohlke

examples/animation/simple_3danim.py

@@ -15,7 +15,7 @@ def Gen_RandLine(length, dims=2) :
     """
     lineData = np.empty((dims, length))
     lineData[:, 0] = np.random.rand(dims)
-    for index in xrange(1, length) :
+    for index in range(1, length) :
         # scaling the random numbers by 0.1 so
         # movement is small compared to position.
         # subtraction by 0.5 is to change the range to [-0.5, 0.5]

examples/event_handling/viewlims.py

@@ -30,7 +30,7 @@ def __call__(self, xstart, xend, ystart, yend):
         threshold_time = np.zeros((self.height, self.width))
         z = np.zeros(threshold_time.shape, dtype=np.complex)
         mask = np.ones(threshold_time.shape, dtype=np.bool)
-        for i in xrange(self.niter):
+        for i in range(self.niter):
             z[mask] = z[mask]**self.power + c[mask]
             mask = (np.abs(z) < self.radius)
             threshold_time += mask

examples/misc/multiprocess.py

@@ -81,7 +81,7 @@ def plot(self, finished=False):
 
 def main():
     pl = NBPlot()
-    for ii in xrange(10):
+    for ii in range(10):
         pl.plot()
         time.sleep(0.5)
     raw_input('press Enter...')

examples/pylab_examples/scatter_star_poly.py

@@ -13,8 +13,8 @@
 plt.scatter(x,y,s=80, c=z, marker=(5,0))
 
 verts = list(zip([-1.,1.,1.,-1.],[-1.,-1.,1.,-1.]))
-pylab.subplot(323)
-pylab.scatter(x,y,s=80, c=z, marker=(verts,0))
+plt.subplot(323)
+plt.scatter(x,y,s=80, c=z, marker=(verts,0))
 # equivalent:
 #plt.scatter(x,y,s=80, c=z, marker=None, verts=verts)
 

examples/pylab_examples/simple_plot_fps.py

@@ -24,7 +24,7 @@
 frames = 100.0
 t = time.time()
 c = time.clock()
-for i in xrange(int(frames)):
+for i in range(int(frames)):
     part = i / frames
     axis([0.0, 1.0 - part, -1.0 + part, 1.0 - part])
 wallclock = time.time() - t

examples/user_interfaces/embedding_in_qt.py

@@ -76,7 +76,7 @@ def compute_initial_figure(self):
 
     def update_figure(self):
         # Build a list of 4 random integers between 0 and 10 (both inclusive)
-        l = [ random.randint(0, 10) for i in xrange(4) ]
+        l = [ random.randint(0, 10) for i in range(4) ]
 
         self.axes.plot([0, 1, 2, 3], l, 'r')
         self.draw()