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Learn Python Programming

Learn Python Programming - Third Edition

By : Fabrizio Romano, Heinrich Kruger
4.2 (35)
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Learn Python Programming

Learn Python Programming

4.2 (35)
By: Fabrizio Romano, Heinrich Kruger

Overview of this book

Learn Python Programming, Third Edition is both a theoretical and practical introduction to Python, an extremely flexible and powerful programming language that can be applied to many disciplines. This book will make learning Python easy and give you a thorough understanding of the language. You'll learn how to write programs, build modern APIs, and work with data by using renowned Python data science libraries. This revised edition covers the latest updates on API management, packaging applications, and testing. There is also broader coverage of context managers and an updated data science chapter. The book empowers you to take ownership of writing your software and become independent in fetching the resources you need. You will have a clear idea of where to go and how to build on what you have learned from the book. Through examples, the book explores a wide range of applications and concludes by building real-world Python projects based on the concepts you have learned.
Table of Contents (18 chapters)
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16
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17
Index

Input parameters

At the beginning of this chapter, we saw that a function can take input parameters. Before we delve into all the possible types of parameters, let's make sure you have a clear understanding of what passing an argument to a function means. There are three key points to keep in mind:

  • Argument-passing is nothing more than assigning an object to a local variable name
  • Assigning an object to an argument name inside a function doesn't affect the caller
  • Changing a mutable object argument in a function affects the caller

Before we explore the topic of arguments any further, please allow us to clarify the terminology a little. According to the official Python documentation:

"Parameters are defined by the names that appear in a function definition, whereas arguments are the values actually passed to a function when calling it. Parameters define what types of arguments a function can accept."

We will try to...

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