What changes are you trying to make? (e.g. Adding or removing code, refactoring existing code, adding reports)

Adding code that retrieves and appends files into a larger data set, calculates functions on the data in the files, and raises a flag if the calculation for the mean in one of the files is 0.

What did you learn from the changes you have made?

I learned to use the Numpy library including its arrays to calculate functions on the data sets.

Was there another approach you were thinking about making? If so, what approach(es) were you thinking of?

I ended up using defined strings instead of boolean values for the check zero question as for some reason they boolean values did not seem to show up when I ran my code, but it worked once I assigned my own strings to denote the boolean values.

Were there any challenges? If so, what issue(s) did you face? How did you overcome it?

I am unsure if I completed the first portion correctly. I don't know if it is supposed to in big chunks or a row. I was also struggling to understand the check zeros and how to make the True/False values from it return when run so I ended up using strings instead.

How were these changes tested?

The changes were tested using the code testing sections in the document and cross referencing outputs with the expected output based on the question.

A reference to a related issue in your repository (if applicable)

Checklist

• I can confirm that my changes are working as intended