ros： python 找不到对应msg

错误原因：

import-im6.q16: not authorized `np' @ error/constitute.c/WriteImage/1037.
import-im6.q16: not authorized `plt' @ error/constitute.c/WriteImage/1037.
import-im6.q16: not authorized `rospy' @ error/constitute.c/WriteImage/1037.
from: can't read /var/mail/VehicleMsg.msg
from: can't read /var/mail/VehicleMsg.msg
from: can't read /var/mail/VehicleMsg.msg
from: can't read /var/mail/MissionfunctionV2_3
from: can't read /var/mail/BehaviorfunctionupperV2_3
from: can't read /var/mail/BehaviorfunctionlowerV2_3
from: can't read /var/mail/BehaviorDecisionMsg.msg
from: can't read /var/mail/DispatchMsg.msg
from: can't read /var/mail/VehicleMsg.msg
from: can't read /var/mail/std_msgs.msg
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 15: CurrentTask: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 16: Route: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 17: VehTaskCompletion: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 18: DischargeReq: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 19: Gear_des: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 20: V_refer: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 21: Route_List: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 22: DiveroffReq: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 23: Scenario: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 24: ADS_Mode: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 25: Valetparking_control: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 26: ChargeParking_Enable: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 27: ValetParking_Enable: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 28: DC_stoprequest: command not found
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 31: syntax error near unexpected token `('
/home/yang/G-Plore/src/StateMachine/src/BehaviorDecisionNodeV2_3.py: line 31: `task_list = GetRouteList()'

解决方法：指定代码执行环境

#!/usr/bin/env python2