# Exercise2.1 Error - cannot launch python node

**URL:** <https://get-help.theconstruct.ai/t/exercise2-1-error-cannot-launch-python-node/681>\
**Category:** ROS Basics In 5 Days (Python)\
**Tags:** error\
**Created:** [September 10, 2019, 8:04am UTC](https://get-help.theconstruct.ai/t/exercise2-1-error-cannot-launch-python-node/681 "2019-09-10T08:04:57Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![bayodesegun](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/bayodesegun/32/10684_2.png) [@bayodesegun](https://get-help.theconstruct.ai/u/bayodesegun)\
**Post date:** [September 10, 2019, 10:33am UTC](https://get-help.theconstruct.ai/t/exercise2-1-error-cannot-launch-python-node/681/2 "2019-09-10T10:33:47Z")

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Hi @jimohafeezco,

Please check out the post below for the solution:

> **[ERROR: cannot launch node of type \[package/file.py\]: can't locate node...](https://get-help.theconstruct.ai/t/error-cannot-launch-node-of-type-package-file-py-cant-locate-node-file-py-in-package-package/54)**
>
> This error is very common when using ROS to launch a python node, either via rosrun or roslaunch. SOLUTION: Does the file file.py… exist in the package package? If not, create it! (Does the package itself exist and is it spelled correctly?)....

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