Data Types

Data types tell you what kind of value you have.

Common Types

  • int: whole numbers, like 0, -7, 42

  • float: decimal numbers, like 3.14, -0.5

  • str: text in quotes, like "hello" or 'CS'

  • bool: True or False

Examples

age = 17          # int
gpa = 3.8         # float
name = "Riley"    # str
is_student = True # bool

Check a Type

type(42)          # <class 'int'>
type("hi")        # <class 'str'>

Convert Between Types

int("7")      # 7
float("2.5")  # 2.5
str(100)      # "100"

Note: converting a non-number string like int("hi") causes an error.

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