Spaceflight tutorial adding kedro[pandas.CSVDataSet,pandas.ExcelDataSet]==0.17.4

Description

When going through the tutorial, I followed the instructions on this page: https://kedro.readthedocs.io/en/stable/03_tutorial/02_tutorial_template.html. However, what ended up happening is that adding the above line to requiremenst.txt did not work as when I ran kedro build-reqs it looked in requirements.in and rebuilt requirements.txt to what it was before I made the update. Should requirements.in be updated here instead?

Context

Trying to get up to speed with kedro

Steps to Reproduce

1. Replacve the line that has kedro==0.17.4 in requirements.txt in /src of whatever directory you choose for the spaceflight tutorial with kedro[pandas.CSVDataSet,pandas.ExcelDataSet]==0.17.4
2. Run kedro build-reqs
3. See that the update you made to requirements.txt is no longer present

Expected Result

Update made to requirements.txt should not be removed.

Actual Result

Update to requirements.txt is not removed

Your Environment

Include as many relevant details about the environment in which you experienced the bug:

kedro, version 0.17.4 Python 3.8.2

[andrewMcK1]

Thanks @andrewMcK1 this is a bug in our docs - you should make the change to requirements.in instead.

Happy to do that 😃 Will submit a PR

[andrewMcK1]

I actually think the documentation here is correct. Following the tutorial exactly, you will not have a requirements.in file to begin with - just a requirements.txt file. The line should be added to that initial requirements.txt; running kedro build-docs will then generate the requirements.in file (by copying and pasting the requirements.txt file to it). Only once requirements.in exists should that be where you change dependencies. This is explained fully here.

We know this is a very confusing flow for users and are hoping to improve it 🙂 But I think if you follow the tutorial precisely, it will all work as it should.

Ah yes you’re right - I must have run kedro build-reqs previously and hence the presence of requirements.in. Thanks for the clarification