Software Engineering

Practical Data Processing with Python Collections

Bring strings, lists, and dictionaries together to tackle problems practitioners face daily. You will count and group values, filter and transform collections with comprehensions, parse raw text into structured records, and aggregate everything into clear summaries and reports.

Python

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4 lessons

16 practices

1 hour

Course details

Python Tallying and Grouping

Preview

Tally the Fruit Words

Report the Most Frequent Word

Group Employees by Department

Report Group Sizes by Department

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Abbey Helterbran

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Jonathan Miller

Senior Machine Learning Engineer

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I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

Practical Data Processing with Python Collections

Course details

Unit 14 practices16 min

Unit 24 practices16 min

Unit 34 practices16 min

Unit 44 practices16 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community