整体目录结构
|-- comm
| |-- prim_joint_set.py
| |-- prim_position_set.py
|-- app
| |-- entity
| | |-- init.py
| |-- http_srv.py
app.entity.__init__py
import sys
import os
current_dir = os.path.dirname(os.path.abspath(__file__))
sys.path.append(f'{current_dir}/../../comm')
from prim_position_set import PrimPositionSet
from prim_joint_set import PrimJointSet
app.http_srv.py
from entity import PrimJointSet