frompandastopyspark.tar.gz

PandasAndPyspark

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Pandas is a popular Python library used to manipulate data, but it has certain limitations in its ability to process large datasets. The Apache Spark analytics library offers significant performance improvements.

This course will help improve your Python-based data processing by leveraging Apache Spark’s multithreading capabilities through the PySpark library. You’ll start by reading data into a PySpark DataFrame before performing basic input/output functions, such as renaming attributes, selecting, and writing data. You’ll move onto transformation functions like aggregation, statistical analysis, and joins before creating custom, user-defined functions. At each step, you’ll get a quick Pandas review before being walked through leveraging the more robust PySpark library to unlock Apache Spark.

By the end of this course, you’ll be able to quickly and reliably process large amounts of data, even stored across multiple files, using PySpark.

From Pandas to PySpark DataFrame

Where does the `pyspark` module have most of the built-in functions that can be used in data transformation?


Where does the <code>pyspark</code> module have most of the built-in functions that can be used in data transformation?

Which function in PySpark is used to create a column object?


Which function in PySpark is used to create a column object?

In PySpark, what is the equivalent method of pandas’ `unique`?


In PySpark, what is the equivalent method of pandas’ <code>unique</code>?

What is the return object of the `groupby` method in case of PySpark?

What is the return object of the <code>groupby</code> method in case of PySpark?

In PySpark, what is the equivalent method of pandas’ `describe`?

In PySpark, what is the equivalent method of pandas’ <code>describe</code>?

In PySpark, the `melt` method can convert a wide dataset into a long dataset?


In PySpark, the <code>melt</code> method can convert a wide dataset into a long dataset?

Data Transformation

Data Transformation

Let's test your understanding of Data Transformation in Pandas and PySpark.

Introduction

Data Input/Output

Data Transformation

User Defined Function (UDF)

Wrapping Up

Appendix

Quiz: Data Transformation