Introduction
In Chapter 3, Executing Python – Programs, Algorithms, and Functions, you covered the basics of Python programs and learned how to write algorithms, functions, and programs. Now, you will learn how to make your programs more relevant and usable in the IT world.
In this chapter, you are going to look at file operations. File operations are essential for scripting as a Python developer, especially when you need to process and analyze a large number of files, such as in data science. In companies that deal with data science, you often do not have direct access to a database. Rather, they receive files in text format. These include CSV files for column data and TXT files for unstructured data (such as patient logs, news articles, user comments, and so on).
In this chapter, we will cover the following topics:
- Reading files
- Writing files
- Preparing for debugging (defensive code)
- Plotting techniques
- The don’ts of plotting graphs
