renderAnim.py

#Modified copy of https://blender.stackexchange.com/questions/8850/how-to-take-images-with-multiple-cameras-with-script
#Turned to a sprite sheet after using imagemagick - montage *.png -tile 8x15 -geometry 100x100 scott.png; convert scott.png -fuzz 30% -transparent "rgba(255, 0, 0, 1)" scott.png
import bpy
import os

animationName = "newWalk"

scene = bpy.context.scene

for action in bpy.data.actions:
    if (action.name == animationName):
        animationFrames = int(action.frame_range.y)
        for currentFrame in range(0, animationFrames):
            bpy.context.scene.frame_set(currentFrame)
            for ob in scene.objects:
                if ob.type == 'CAMERA' and ob.name != "guideCam":
                    bpy.context.scene.camera = ob
                    print('Set camera %s' % ob.name )
                    file = ob.name + "_" + str(currentFrame)
                    bpy.context.scene.render.filepath = file
                    bpy.ops.render.render( write_still=True )