Primitive data types

Python features a few primitive data types:

int: Unlimited precision, unbounded integers. 1, 2, 10
float: Familiar IEEE-754 floating point numbers. 0.5, float('inf'), float('nan')
complex: Complex numbers. 1j, -1 + 0j, 1+1j, complex('inf')
bool: True and False. Considered a subtype of int
None: A singleton to represent the absence of a value
str: An immutable sequence of characters. Both " and ' may be used, as long as they are consistent. Python makes no distinction between a chr and a str
list: A mutable heterogenous list of objects: [1, 2, 3], [1, True, 'a']
dict: Key-value pairs: {'a': 1, 'b': 2}, {}
set: Unique objects: {1, 2, 3}, {False, 1, 'a'}. The empty set can only be created with set().
tuple: Lists, but immutable: 1, 2, 3, 4,. Parentheses may be used, but are optional in certain contexts.

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