Overview of Python's built-in data types and sample code

Python is a high-level programming language with a rich set of built-in data types that help developers process and manipulate data efficiently. Below we will introduce Python built-in data types in detail and provide corresponding sample code.

1. Numbers:
   Number types in Python include integers (int), floating point numbers (float), and complex numbers (complex). They are used to represent different types of numeric values.

   Sample code:

   # 整数
   num1 = 10
   print(num1)  # 输出：10
   print(type(num1))  # 输出：<class 'int'>
   
   # 浮点数
   num2