Data Types

Python is a dynamically typed language, meaning you don't need to explicitly declare the data type of a variable before assigning a value to it. The interpreter automatically determines the data type based on the assigned value.

Python offers a variety of built-in data types to handle different kinds of data. Let's explore them in detail:

Numeric Types

• int(Integers): Represents integer values (whole numbers without decimal points).

Python

x = 10

print(type(x))  # Output: <class 'int'>

• float: Represents floating-point numbers (numbers with decimal points).

Python

y = 3.14

print(type(y))  # Output: <class 'float'>

• complex: Represents complex numbers (numbers with real and imaginary parts).

Python

z = 2 + 3j

print(type(z))  # Output: <class 'complex'>

Sequence Types

• list: An ordered collection of items, mutable (can be changed).

Python

fruits = ["apple", "banana", "cherry"]

print(type(fruits))  # Output: <class 'list'>

• tuple: An ordered collection of items, immutable (cannot be changed).

Python

colors = ("red", "green", "blue")

print(type(colors))  # Output: <class 'tuple'>

• range: Represents a sequence of numbers.

Python

numbers = range(5)  # Creates a sequence from 0 to 4

print(type(numbers))  # Output: <class 'range'>

Boolean Type

• bool: Represents logical values, either True or False.

Python

is_valid = True

print(type(is_valid))  # Output: <class 'bool'>

Set Types

• set: An unordered collection of unique items.

Python

unique_numbers = {1, 2, 3, 3, 4}  # Duplicates are removed

print(type(unique_numbers))  # Output: <class 'set'>

• frozenset: An immutable version of set.

Python

immutable_set = frozenset([1, 2, 3])

print(type(immutable_set))  # Output: <class 'frozenset'>

Mapping Type

• dict: An unordered collection of key-value pairs.

Python

person = {"name": "Alice", "age": 30}

print(type(person))  # Output: <class 'dict'>

Binary Types

• bytes: Represents an immutable sequence of bytes.

Python

data = b'hello'

print(type(data))  # Output: <class 'bytes'>

• bytearray: A mutable sequence of bytes.

Python

data = bytearray(5)

print(type(data))  # Output: <class 'bytearray'>

• memoryview: A view of a memory buffer.

None Type

• None: Represents the absence of a value.

Python

result = None

print(type(result))  # Output: <class 'NoneType'>

Remember: Python is dynamically typed, so you can change the data type of a variable by assigning a different value to it.