Error in Exercise 4.4

[eblady]

HI,

When I try to code the exercise 4.4 of the ROS Navigation course, this error came out:

Any ideas? Thanks in advance.

[faizansana]

Hi there!

So this error is thrown by “pylint” which is just a python linter package. It helps you find the errors statically as you go along (similar to C++) but is not always correct since it looks into your python environment to identify the package name (in this case move_base_msgs).

As long as you are sure that this package exists and the code works when you use roslaunch/rosrun, you can ignore this error. It also sometimes takes pylint a little while for checking on new packages.

[eblady]

Thanks…

I’ll do that…

Cheers.