rename_actions.py

import bpy

actions = bpy.data.actions

loop_names = ["_run_", "_walk_", "_sprint_", "loop", "flail"]

# reanme actions
for action in actions:
    action.name = action.name \
        .replace("ALS_", "") \
        .replace("_0_Mannequin_Skeleton", "") \
        .replace("_0_AnimMan", "")
    action.name = action.name.split(".")[0]
    lowername = action.name.lower()
    if any([n in lowername for n in loop_names]):
        action.name = action.name.split("-")[0] + "-loop"