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Data Wrangling

How to sort a Python dataframe by column values and index?

As part of your data analysis work you will often encounter the need to sort your data. The Pandas library provides the required capability to sort your dataframes by values or row indexes. Let’s take a look. Creating your data We’ll start by creating simple dataframe. Note that in addition to Pandas we’ll import the …

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Categories Data Wrangling

How to filter and subset a Python dataframe by specific values?

Quite often as part of your data wrangling, you’ll invariably need to subset or filter your dataset and select for specific rows by one or multiple values. In today’s quick tutorial i’ll show how to do exactly that. Creating your data We’ll start by creating a very simple data set which we’ll use for learning …

Read moreHow to filter and subset a Python dataframe by specific values?

Categories Data Wrangling

How to show and count duplicated values and rows in Pandas?

As part of the data scrubbing process for machine learning and data visualization, you might want to get rid of duplicated occurrences in your data set. In today’s post, we’ll learn how you can use Python in order to quickly identify duplicate values in your data, so that you can scrub them later as needed. …

Read moreHow to show and count duplicated values and rows in Pandas?

Categories Data Wrangling

How to rename your dataframe columns in Pandas?

As part of your data preparation, you might want to modify your raw data column heading labels to allow for more descriptive analysis and visualization. In this article we’ll go through several scenarios in which you’ll be using Python and the Pandas library in order to manipulate your column headers. As we typically do, we’ll …

Read moreHow to rename your dataframe columns in Pandas?

Categories Data Wrangling
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