introduction to python for data engineering.
Tags: beginners, datascience, codenewbie, python
Published: 2022-08-28 16:56:08



What is data engineering?

Data engineering is the process of creating and maintaining data systems. This includes designing, building, testing, and deploying data pipelines. A data engineer uses software tools to clean, organize, prepare, analyse, visualize, and report on data. Data engineers work with databases, business intelligence systems, application programming interfaces (APIs), and machine learning algorithms to build solutions that help organizations make sense of their data.
 
 The role of Python in data engineering

Python is a versatile language that can be used for a wide variety of tasks, from data manipulation to data science. Python is particularly well suited for data engineering due to its wide variety of modules and libraries. 
There are many reasons why Python is the best language for data engineering. First, it has a wide variety of modules and libraries that make it easy to build data pipelines. Second, it is easy to learn and has a syntax that is similar to English. Third, it is a very powerful language that can be used for complex data engineering tasks. 
There are many great Python libraries for data engineering, but some of the most popular include Apache Beam, Luigi, and PySpark. 
Apache Beam is a great tool for building data pipelines. It provides a rich set of primitives that can be used to build complex pipelines with ease. Luigi is another popular tool that can be used to build complex workflows. PySpark is a great library for working with large datasets in a distributed manner. 
These numerous libraries make it easy to build complex data pipelines. Python is also frequently used for ETL (extract, transform, load) tasks. 



Before starting with Python for data engineering, you need to set up your development environment. This includes installing Python and setting up your IDE (integrated development environment). 

Installing Python is easy, you can use a tool like Anaconda or Miniconda to get started. Once you have installed Python, you will need to choose an IDE (integrated development environment) such as Visual Studio Code. 
Some of the libraries to use include:

- Pandas
Pandas is a library for manipulating and processing dataframes. A dataframe is a tabular dataset, where each row represents a single observation and columns represent variables. Pandas provides a wide range of operations including read/write, filtering, grouping, aggregation, sorting, joining, reshaping, and exporting to various formats.


- NumPy
NumPy is a fundamental package for scientific computing with Python. It provides tools for linear algebra, array processing, integration, interpolation, random number generation, optimization, special mathematical functions, and visualization. NumPy is maintained by the community-supported SciPy Project.


- Matplotlib
Matplotlib is a Python module for publication quality graphics production. It works with both GUI and text user interfaces. It supports vector output, animation, and interactivity.

-PySpark
PySpark is an open source library that allows python to be used for data engineering. It provides the user with a set of libraries and tools that can be used to create scalable big data applications.
In conclusion, we just covered the basics of starting out data engineering with python and also how to set up your python environment. Thank you for reading this article.