Python is a versatile and beginner-friendly programming language that has gained immense popularity for its simplicity, readability, and wide range of applications. Whether you’re new to programming or looking to expand your skills, learning Python is an excellent choice. In this comprehensive guide, i’ll provide you with a curated list of resources and tutorials from my website to help you master Python programming from scratch.
Big Data Engineer Interview Questions
Preparing for an interview in the Big Data field can be challenging, given the diverse range of technologies and methodologies involved. To help you excel in your career, I’ve compiled an extensive collection of Big Data interview questions asked by different companies in the industry
Python Free Learning Resources: Your Gateway to Mastering Python Programming
Python, with its simplicity and versatility, has become one of the most popular programming languages today. Whether you’re a beginner or an experienced developer, the abundance of free learning resources available online can help you master Python and unlock its full potential. In this blog post, we present a carefully curated selection of what we believe to be the best free resources available online. From YouTube channels to websites and offline tools, these resources are handpicked to empower you with the knowledge and skills needed to excel in Python programming. Let’s dive in!
End to End Data Engineering Roadmap
End to End Data Engineering Roadmap:
Prerequisites:
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1. Basic Linux commands.
2. Programming fundamentals.
3. SQL is very important.
Discover My Topmate Services
In this article, I will be listing down and explain all my services available on topmate platform but before this let’s talk about topmate first. topmate.io is a platform that enables you to connect with your audience through 1:1 session – to share your knowledge and monetise your time better.
PySpark | How to Filter Data in DataFrame?
Filtering data is one of the most common operations you’ll perform when working with PySpark DataFrames. Whether you’re analyzing large datasets, preparing data for machine learning models, or performing transformations, you often need to isolate specific subsets of data based on certain conditions. PySpark provides several methods for filtering DataFrames, and this article will explore the most widely used approaches.
Tech Mahindra | Data Engineer Interview Questions – Set 1
In this post, we will see the list of questions asked in Tech Mahindra Company Interview for Data Engineering profile.
PySpark | How to Rename Column in a Dataframe?
Renaming columns in a PySpark DataFrame is a common task when you’re cleaning, transforming, or organizing data. Whether you’re working with external datasets or need to make your DataFrame more readable, PySpark offers multiple ways to rename columns. In this article, we’ll cover three popular methods to rename columns in PySpark:
1) withColumnRenamed()
2) selectExpr()
3) select() with col()
PySpark | How to Add a New Column in a Dataframe?
In PySpark, adding a new column to a DataFrame is a common and essential operation, often used for transforming data, performing calculations, or enriching the dataset. PySpark offers 3 main methods for this: withColumn(),select() and selectExpr(). These methods allow you to create new columns, but they serve different purposes and are used in different contexts.
This article will guide you through adding new columns using both methods, explaining their use cases and providing examples.
PySpark | How to Create a Dataframe?
In PySpark, a DataFrame is a distributed collection of data organized into named columns, similar to a table in a relational database or an Excel spreadsheet. DataFrames provide a powerful abstraction for working with structured data, offering ease of use, high-level transformations, and optimization features like catalyst and Tungsten. This article will cover how to […]
PySpark | How to Create a RDD?
Resilient Distributed Datasets (RDDs) are the core abstraction in PySpark, offering fault-tolerant, distributed data structures that can be operated on in parallel. Although the DataFrame API is more popular due to its higher-level abstractions, RDDs are still fundamental for certain low-level operations and are the building blocks of PySpark.
In this article, you’ll learn how to create RDDs in PySpark, the different ways to create them, and when you should use RDDs over DataFrames.
TCS | Data Engineer Interview Questions – Set 1
In this article, we will see the list of questions asked in TCS Company Interview for Data Engineers. Let’s see the Questions:
Accenture | Azure Data Engineer Interview Questions – Set 1
In this article, we will see the list of questions asked in Accenture Company Interview for Azure Data Engineers.
Let’s see the Questions:
PySpark | How to Create a Spark Session?
Creating a Spark session is the first step when working with PySpark, as it allows you to interact with Spark’s core functionality. This article will walk you through the process of creating a Spark session in PySpark.
PySpark | How to setup PySpark on a Windows Machine?
In this post, we will extend that setup to include PySpark, allowing you to work with Spark using Python. Let’s dive into the steps to get PySpark running on your Windows machine!