我一直试图使用rosrun命令运行python文件，但是不幸的是，由于一个名为rospkg的软件包，我没有发现此模块错误。直到前一天，一切正常，但昨天，ubuntu18.04进行了一些更新，其中也有针对ubuntu base的更新，因为该更新我有此错误。
我尝试检查是否已安装相应的python-rospkg，并且它说我已经有了最新版本。我也用
echo $PYTHONPATH
要检查来源路径并且来源正确，我不确定是什么导致了此错误。
错误如下
Traceback (most recent call last
File
"/home/microbot/catkin_ws/src/spider/spider_control/control.py",
line 5, in <module>
import roslib
File "/opt/ros/melodic/lib/python2.7/dist-
packages/roslib/__init__.py", line 50, in <module>
from roslib.launcher import load_manifest
File "/opt/ros/melodic/lib/python2.7/dist-
packages/roslib/launcher.py", line 42, in <module>
import rospkg
ModuleNotFoundError: No module named 'rospkg'
我的shebang如下，
#!/usr/bin/python3
当我尝试通过将shebang更改为来运行文件时
#!/usr/bin/python2.7
我收到以下错误
Traceback (most recent call last):
File
"/home/microbot/catkin_ws/src/spider/spider_control/control.py",
line 3, in <module>
import tensorflow as tf
ImportError: No module named tensorflow
我已经使用pip安装安装了tensorflow版本1.14。谁能帮我解决这个错误。预先感谢
编辑：
当我尝试安装python-rospkg时，我手动尝试将python路径设置为/usr/lib/python2.7/dist-packages，它说它已安装在该位置。这样做我导入张量流时出错，错误是
`Traceback (most recent call last):
File
"/home/microbot/catkin_ws/src/spider/spider_control/control.py", line
3, in <module>
import tensorflow as tf
File "/home/microbot/.local/lib/python3.6/site-
packages/tensorflow/__init__.py", line 22, in <module>
import inspect as _inspect
File "/usr/lib/python3.6/inspect.py", line 41, in <module>
import linecache
File "/usr/lib/python3.6/linecache.py", line 11, in <module>
import tokenize
File "/usr/lib/python3.6/tokenize.py", line 33, in <module>
import re
File "/usr/lib/python3.6/re.py", line 142, in <module>
class RegexFlag(enum.IntFlag):
AttributeError: module 'enum' has no attribute 'IntFlag'
Error in sys.excepthook:`