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Back 3. 🧠 Data Types in Python 19 Jun, 2025
Programming Programming
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In Python, data types are classifications that specify the type of value a variable holds. Understanding them is essential for writing correct and efficient code.

🔹 1. Basic Built-in Data Types

Numeric Types

Type Description Example
int Integer (whole number) x = 10
float Floating-point number (decimal) y = 3.14
complex Complex number (real + imag part) z = 2 + 3j

Text Type

Type Description Example
str String (text) name = "Abhi"

Boolean Type

Type Description Example
bool Logical True or False is_active = True

Sequence Types

Type  Description Example
list Ordered, mutable collection fruits = ["apple", "banana"]
tuple       Ordered, immutable collection coords = (10, 20)
range Sequence of numbers range(0, 5)

Set Types

Type  Description     Example
set Unordered, unique items   colors = {"red", "blue"}
frozenset     Immutable set   fs = frozenset([1, 2, 3])

Mapping Type

Type Description Example
dict Key-value pairs person = {"name": "Abhi", "age": 30}

🔹 2. Binary Types

Type Description Example
bytes Immutable byte sequences b = b"hello"
bytearray Mutable byte sequences ba = bytearray([65, 66])
memoryview Memory view of bytes mv = memoryview(b'abc')

🔹 3. None Type

Type Description Example
NoneType Represents null/empty x = None

🔍 Use type() to Check Data Type

x = 10
print(type(x))  # Output: <class 'int'>

🛠️ Type Conversion Examples

# Convert int to float
a = float(5)       # 5.0

# Convert str to int
b = int("10")      # 10

# Convert list to set
c = set([1, 2, 2]) # {1, 2}