Y

pandas · Beginner · 5 h

Load, inspect and filter

Read files, understand dtypes and missing values, select rows and columns, and add new columns.

Why employers care: The first 20 minutes of any take-home assignment are loading and inspecting data. Doing it cleanly shows you know what you are looking at.

In the roadmaps for: Data Analyst, Data Scientist, AI/ML Engineer

Lessons, in order

  1. Load, inspect and filter a real sales fileRead half a million invoice lines, understand what each column really holds, and keep only the rows you trust.3 min

Next shelf: Group, join, reshape and resample