在使用Python的Maya中，如何检查帧是否为关键帧？

import maya.cmds as cmds

def is_keyframe(frame, obj):
    keyframes = cmds.keyframe(obj, q=True)
    if keyframes is None:
        return False
    return frame in keyframes

# 检查第10帧是否为关键帧
frame = 10
obj = 'pCube1'
is_keyframe(frame, obj)

import maya.cmds as cmds

def is_keyframe(frame, obj):
    keyframe = cmds.findKeyframe(obj, time=(frame, frame), which='next')
    return keyframe == frame

# 检查第10帧是否为关键帧
frame = 10
obj = 'pCube1'
is_keyframe(frame, obj)