Select posed cape controls

import maya.cmds as mc

cape_controls = mc.ls('*_Cape*_Ctrl')
cape_dict = {}

for i in cape_controls:
    channel_dict = {}
    
    for channel in 'tr':
        for axis in 'xyz':
            channel_value = round(mc.getAttr('{}.{}{}'.format(i, channel, axis)), 3)
            if channel_value:
                channel_dict['{}{}'.format(channel, axis)] = channel_value
                
    if channel_dict:
        cape_dict[i] = channel_dict
    
print(cape_dict)