By the end of this tutorial, you will have a solid understanding of Base64 encoding and decoding in Python and be able to apply this knowledge in your own projects. We will cover various examples, including working with images and binary files, handling common errors and issues, and exploring real-world applications of Base64.
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In this tutorial, we will learn how to use Python’s built-in base64 library to perform encoding and decoding operations on binary data. Since the resulting string only contains 64 different characters (hence the name Base64), it is considered safe for use in most text-based systems. This process is performed by dividing the 24 bits into four groups of six bits each, and then using a pre-defined lookup table to map each group of bits to a specific ASCII character. The Base64 encoding scheme works by taking three bytes of binary data (24 bits) and converting them into four ASCII characters (each represented by 6 bits).
Base64 encoding is particularly useful when you need to transmit binary data over a medium that only supports textual data. It is designed to ensure that the resulting string only contains a set of characters that are safe to use in various environments, such as URLs, email attachments, and even embedding within XML documents or JSON payloads. Base64 is a widely used encoding scheme that represents binary data in an ASCII string format.
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