获取物体上是否有关键帧

# coding=Utf-8
# aut:zy

import re
import pymel.core as pm

def get_keyframe(obj):
    """
    递归查找父物体或者父物体关联的节点上是否有关键帧
    如果有关键帧且有变化，则该物体需要出缓存
    如果没有关键帧或者有关键帧但无变化，则该物体不需要出缓存
    Args:
        obj:

    Returns: bool

    """
    KEY_ANICURVE = ['animCurveTL', 'animCurveTA', 'animCurveTT', 'animCurveTU']


    connect_s = obj.listConnections(s=1, d=0, scn=1)
    if not connect_s:
        return False
    else:
        result = 0
        for connect in connect_s:
            if connect.nodeType() == 'transform':
                objs = obj.listConnections(s=1, d=0, p=1, scn=1)
                if not objs:
                    return False
                for obj in objs:
                    result += get_keyframe(obj)
            elif connect.nodeType() in KEY_ANICURVE:
                attr = connect.listConnections(s=0, d=1, p=1, scn=1)[0]
                if len(set(pm.keyframe(attr, q=1, vc=1))) > 1:
                    return True
                else:
                    return False
            else:
                objs = obj.listConnections(s=1, d=0, scn=1)
                if not objs:
                    return False
                for obj in objs:
                    result += get_keyframe(obj)
    return bool(result)