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You're reading from  Mastering pandas. - Second Edition

Product typeBook
Published inOct 2019
Reading LevelIntermediate
Publisher
ISBN-139781789343236
Edition2nd Edition
Languages
Python
Tools
Pandas
Concepts
Scientific Computing
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Author (1)
Ashish Kumar
Ashish Kumar
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Ashish Kumar

Ashish Kumar is a seasoned data science professional, a publisher author and a thought leader in the field of data science and machine learning. An IIT Madras graduate and a Young India Fellow, he has around 7 years of experience in implementing and deploying data science and machine learning solutions for challenging industry problems in both hands-on and leadership roles. Natural Language Procession, IoT Analytics, R Shiny product development, Ensemble ML methods etc. are his core areas of expertise. He is fluent in Python and R and teaches a popular ML course at Simplilearn. When not crunching data, Ashish sneaks off to the next hip beach around and enjoys the company of his Kindle. He also trains and mentors data science aspirants and fledgling start-ups.
Read more about Ashish Kumar

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Other methods for reshaping DataFrames

There are various other methods that are related to reshaping DataFrames; we'll discuss them here.

Using the melt function

The melt function enables us to transform a DataFrame by designating some of its columns as ID columns, ensuring they remain as columns with the remaining non-ID columns treated as variable columns and are pivoted and become part of a name-value two-column scheme. ID columns uniquely identify a row in a DataFrame.

The names of those non-ID columns can be customized by supplying the var_name and value_name parameters. The use of melt is perhaps best illustrated by an example, as follows:

    In [385]: from pandas.core.reshape import melt
    
    In [401]: USIndexDataDF...
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Mastering pandas. - Second Edition
Published in: Oct 2019Publisher: ISBN-13: 9781789343236
© 2019 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Ashish Kumar

Ashish Kumar is a seasoned data science professional, a publisher author and a thought leader in the field of data science and machine learning. An IIT Madras graduate and a Young India Fellow, he has around 7 years of experience in implementing and deploying data science and machine learning solutions for challenging industry problems in both hands-on and leadership roles. Natural Language Procession, IoT Analytics, R Shiny product development, Ensemble ML methods etc. are his core areas of expertise. He is fluent in Python and R and teaches a popular ML course at Simplilearn. When not crunching data, Ashish sneaks off to the next hip beach around and enjoys the company of his Kindle. He also trains and mentors data science aspirants and fledgling start-ups.
Read more about Ashish Kumar

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