python maya unlock attributes

import maya.cmds as cmds

def GetAllCurveJoint():
    objs = []
    curves = cmds.ls(type="nurbsCurve", ni=True, o=True, r=True, l=True)
    joints = cmds.ls(type="joint", ni=True, o=True, r=True, l=True)
    for i in curves:
        objs.append(i)
    for i in joints:
        objs.append(i)
    transforms = cmds.listRelatives(objs, p=True, type="transform")
    return transforms

def UnlockAll():
    locked = []
    objs = GetAllCurveJoint()
    for obj in objs:
        attrs = cmds.listAttr(obj)
        for attr in attrs:
            try:
                attrObj = "{0}.{1}".format(obj, attr)
                if cmds.getAttr(attrObj, lock=True) == True:
                    cmds.setAttr(attrObj, lock=0)
                    locked.append(attrObj)
            except ValueError:
                continue
    print(locked)

UnlockAll()