子标题：Modernize existing Python code and plan code migrations to Python using this definitive guide
Python Essentials provides a vital tour of the most critical features of Python. Starting with setup and installation, you will soon dive into exploring built-in-library types, Python’s rich collection of operators and built-in functions, variables, assignment and scoping rules.
From this foundation, you will explore functions, a crucial aspect of any programming language, including considerable sophistication in defining parameters to a function and providing argument values. Explore advanced functional programming using generator expressions, comprehensions, and generator functions. Handle file input and output using web services and context managers, exception handling and explore wider, popular frameworks.
Through this concise and practical guide, you will explore all you need to know to leverage this powerful, and industry-standard, programming language.