Python Data Types Explained — int, str, list, dict & More
Python built-in types: numbers, strings, lists, tuples, dicts, sets. Mutability and type checking.
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Python Built-in Types
Python's dynamic typing means variables reference objects of any type. Understanding mutability and core types prevents subtle bugs.
Why Python data types Matters
Confusing list mutability with tuple immutability causes subtle bugs — types are the foundation of every Python script.
Lists are ordered and mutable; tuples are hashable records; dicts map keys to values in O(1) average lookup.
Python data types — Key Ideas You Must Know
- int, float, bool
- str — immutable text
- list — mutable ordered
- tuple — immutable ordered
- dict — key-value mapping
- set — unique unordered
Practice Python data types with Free Lessons
Work through Python syntax and data types on Sturdee interactively.
Tip: Free interactive lesson: /tutorials/python/python_syntax — practice Python data types with runnable code on Sturdee.
Python Data Types Explained — FAQ
Frequently Asked Questions
list vs tuple?+
Use list when you need to change data. Tuple for fixed records and dict keys.
Continue learning interactively
Free tutorial: /tutorials/python/python_syntax →