2PROGRAMMING IN THE INTERACTIVE SHELL
“The Analytical Engine has no pretensions whatever to originate anything. It can do whatever we know how to order it to perform.”—Ada Lovelace, October 1842
Before you can write encryption programs, you need to learn some basic programming concepts. These concepts include values, operators, expressions, and variables.
Let’s start by exploring how to do some simple math in Python’s interactive shell. Be sure to read this book next to your ...
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