__author__ = 'thoth'

import bpy

def report(path_blocks, name, path_anim, action):
    print("%s[%r].animation_data.%s = bpy.data.actions[%r]"%(path_blocks, name, path_anim, action.name))

def scan_datablock(block, path, action):
    ad = block.animation_data
    if ad is None:
        return
    if ad.action == action:
        report(path, block.name, "action", action)


def check_datablocks(datablocks, path, action):
    for block in datablocks:
        scan_datablock(block, path, action)

def enumerate_users_of_action(action):

    check_datablocks(bpy.data.objects, "bpy.data.objects", action)

#

enumerate_users_of_action(bpy.data.actions[3000])