Python expressions are fundamental components of the Python programming language that evaluate to produce a value. They can range from simple arithmetic operations, such as addition and subtraction, to more complex constructs involving variables, functions, and data structures. Expressions can be used in various contexts, including assignments, conditionals, and loops, making them essential for writing effective Python code. Understanding how to construct and utilize expressions is crucial for any programmer, as they form the basis for performing calculations, manipulating data, and controlling the flow of a program. Mastery of expressions enhances coding efficiency and problem-solving capabilities in Python.