Python Data Types Explained – Beginner to Pro (Step-by-Step Guide)

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🐍 Python Data Types – From Basics to Pro (Step-by-Step)

Here's Python data types covered in a crisp, step-by-step beginner-to-pro tutorial. This article addresses all the fundamental types, how they are treated by Python, and practical examples you can experiment with.





📄 What are Data Types?

Each value in Python has a data type. It informs Python about the type of value stored in a variable — a number, string, list, etc.


You don't have to explicitly define data types. Python infers them for you!



x = 5 # int
y = 3.14 # float
name = "Nivesh" # str





📊 Built-in Data Types in Python

Python supports various built-in data types:

Text Type	str
Numeric Types	int, float, complex
Sequence Types	list, tuple, range
Mapping Type	dict
Set Types	set, frozenset
Boolean Type	bool
Binary Types	bytes, bytearray, memoryview

🔢 Numeric Types

int - Whole numbers


age = 25

float - Decimal numbers


pi = 3.1415

complex - Complex numbers (used in advanced math)


z = 3 + 2j




🔍 Text Type: str

Used for strings (text):



greeting = "Hello, world!"




📆 Boolean Type: bool

Represents True or False:



is_active = True
is_logged_in = False




📂 Sequence Types

list - Ordered, mutable collection


colors = ["red", "blue", "green"]

tuple - Ordered, immutable collection


coordinates = (10, 20)

range - Sequence of numbers


nums = range(1, 6) # 1 to 5




📝 Mapping Type: dict

A collection of key-value pairs:



person = {
"name": "Radha",
"age": 22
}




✨ Set Types

set - Unique, unordered elements


unique_nums = {1, 2, 3, 2}

frozenset - Immutable set


frozen = frozenset(["a", "b"])




🚫 Type Checking

Use type() to determine a variable's type:



x = 5
print(type(x)) #




⚖️ Type Conversion

Convert from one type to another using built-in functions:



x = 10
print(float(x)) # 10.0

• int("5") ➞ 5
• str(10) ➞ "10"
• list("abc") ➞ ["a", "b", "c"]

💞 Bonus Tip: Duck Typing

Python has duck typing: “If it walks like a duck and quacks like a duck, it’s a duck.”


You only need to care about the type when it matters.


📚 Keep learning, and happy coding!




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