Added example of snapshots with Python scripting beside #snapshot command syntax.

docs/source/input.rst

@@ -241,6 +241,16 @@ or
 
 For example to save a snapshot of the electromagnetic fields in the model at a simulated time of 3 nanoseconds use: ``#snapshot: 0 0 0 1 1 1 0.1 0.1 0.1 3e-9 snap1``
 
+.. tip::
+    You can take advantage of Python scripting to easily create a series of snapshots. For example, to create 30 snapshots starting at time 0.1ns until 3ns in intervals of 0.1ns, use the following code snippet in your input file. Replace `x1 y1 z1 x2 y2 z2 dx dy dz` accordingly.
+
+    .. code-block:: none
+
+        #python:
+        for i in range(1, 31):
+            print('#snapshot: x1 y1 z1 x2 y2 z2 dx dy dz {} snapshot{}'.format((i/10)*1e-9, i))
+        #end_python:
+
 
 .. _materials: