Exam (elaborations) python notes from somasundaram

Python Comprehensive Notes



1. Introduction to Python

Python is a high-level, interpreted programming language created by Guido van Rossum in 1991. Known
for its simplicity and readability, Python is used in web development, data science, artificial intelligence,
scientific computing, and more.

Key Features of Python:

 Easy to Learn: Its simple syntax resembles natural language.

 Interpreted: Python code is executed line by line.

 Dynamically Typed: No need to declare variable types explicitly.

 Extensive Libraries: Python has a vast collection of libraries like NumPy, pandas, TensorFlow, etc.

 Portability: Python is platform-independent, running on Windows, macOS, Linux, etc.



2. Python Basics

2.1 Python Syntax

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# A simple Python program

print("Hello, World!") # Output: Hello, World!

2.2 Variables

Variables are used to store data. No need for explicit type declarations.

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x = 10 # Integer

y = 3.14 # Float

name = "Python" # String

is_active = True # Boolean

2.3 Data Types

 Numeric Types: int, float, complex

,  Sequence Types: list, tuple, range

 Text Type: str

 Set Types: set, frozenset

 Mapping Type: dict

 Boolean Type: bool

 Binary Types: bytes, bytearray, memoryview

2.4 Input and Output

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name = input("Enter your name: ") # Taking input

print(f"Hello, {name}!") # Output: Hello, User!



3. Control Structures

3.1 Conditional Statements

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age = 18

if age >= 18:

print("You are an adult.")

elif age > 12:

print("You are a teenager.")

else:

print("You are a child.")

3.2 Loops

for Loop:

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for i in range(1, 6):

print(i) # Output: 1 2 3 4 5