Python: added some new examples

python/examples/custom-context.py

@@ -0,0 +1,17 @@
+import isaac as sc
+
+N = 7
+
+platforms = sc.driver.get_platforms()
+devices = [d for platform in platforms for d in platform.get_devices()]
+device = devices[0]
+print 'Using', device.name, 'on', device.platform.name
+
+context = sc.driver.context(device)
+x = sc.empty(N, sc.float32, context)
+y = sc.empty(N, sc.float32, context)
+
+z, events = sc.driver.enqueue(x + y)
+z.context.synchronize()
+
+print z