Coding challenges

Python pandas interview questions

Analyst interviews and take-home tasks often ask you to clean and summarise data with pandas. Each question gives you DataFrames and asks for a function that returns the right table. It runs in Python in your browser, and hidden tests check the awkward cases.

Your code runs in Python on your own device (pandas loads the first time you run it). Nothing is sent to us.

The pandas challenges

pandas is the tool most analyst teams use for work that’s awkward in SQL: tidying messy columns, reshaping and quick analysis. Interviewers look for the same habits as in SQL, plus pandas-specific ones: filtering with clear conditions, merging on the right keys, and keeping the result as a tidy table.

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Want a day-by-day route through them? Follow the two-week Python and pandas plan

Interview guides

Read the guide

Explaining your code out loud is half of a technical interview. These guides show how.

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Then practise explaining it

Every challenge ends with the follow-up questions an interviewer would ask. Say your answers out loud, then practise technical and competency questions on camera, or in a live interview with an AI interviewer, and get written feedback. Free to start, with no card needed.

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