Variables and Data Types

When you assign a value to a variable in Python, the variable stores that value in memory and remembers its type. The int type represents whole numbers without decimals, like 25 in the example above. The float type is used for numbers with decimal points, such as 5.9. The str type, or string, is used for text data and is always enclosed in quotes, as seen with "Alex". Each type serves a unique purpose: use int for counting or indexing; float for precise measurements or calculations with decimals; and str for handling names, messages, or any kind of textual information.