Explain Python's built-in data types.

Python's most common built-in data types, grouped by the kind of value they hold, are:

• Numeric: int, float and complex.
• Sequence: str, list and tuple.
• Set: set and frozenset.
• Mapping: dict.
• Boolean: bool, with the values True and False.
• None: NoneType, whose only value is None.

Python is dynamically typed, so a variable has no fixed type, and type(value) tells you the type of the value it holds. The types also differ in mutability. Lists, dicts and sets can change in place, while numbers, strings and tuples cannot.

integer = 42
floating = 3.14
string = "Hello"
boolean = True
none_value = None