# Exercise 4.3 ROS Basics Python

**URL:** <https://get-help.theconstruct.ai/t/exercise-4-3-ros-basics-python/15271>\
**Category:** ROS Basics In 5 Days (Python)\
**Tags:** error\
**Created:** [February 6, 2022, 5:45pm UTC](https://get-help.theconstruct.ai/t/exercise-4-3-ros-basics-python/15271 "2022-02-06T17:45:51Z")\
**Posts on this page:** 1\
**Showing post:** 13

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**Author:** ![Joseph1001](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/joseph1001/32/7077_2.png) [@Joseph1001](https://get-help.theconstruct.ai/u/Joseph1001)\
**Post date:** [February 8, 2022, 8:35am UTC](https://get-help.theconstruct.ai/t/exercise-4-3-ros-basics-python/15271/13 "2022-02-08T08:35:02Z")

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> [@Exercise 4.3 import Age module error](https://get-help.robotigniteacademy.com/t/exercise-4-3-import-age-module-error/6310/2):
>
> Try deleting your build/ and devel/ folders: cd catkin\_ws/ rm -rf build/ rm -rf devel/ If that doesn’t work, can you share what the error says? It sounds like something might be off with the node. Rodrigo

The link mentioned above got into the same problem as yours. so from the articles try the following:

Go to the catkin\_ws directory and run commands:  
`rm -rf build/ devel/`  
Now compile as shown.

> [@Joseph1001](#):
>
> - Go to catkin\_ws directory
> - run the commands **catkin\_make**
> - run the command **source devel/setup.bash**

After compilation, try running the program again to check if problem persist.

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