Javatpoint python Tutorials for BCA B.tech beginners in 2025

Python Javatpoint notes tutorials pdf for Bca and B.tech Exams 2025

Introduction To Python javatpoint

Python javatpoint is a high-level, interpreted language that is simple and easy to read. It is perhaps the most popular web development, data science, artificial intelligence, automation, etc. language.

History of Python pdf for BCA and B.tech cs exam

Python is an interpreted language invented in the late 1980s by Guido van Rossum and released in 1991. Python was intended to be a successor to ABC and emphasized code readability while maintaining simplicity. Since then, Python has received a major overhaul several times.

Python 1.0 (1991): Initial version containing basic features like exception handling and core data types.

Python 2.x (2000-2010): Added new features like list comprehensions and garbage collection but was not backward compatible with Python 3.

Python 3.x (2008-Present): Introduced many major improvements, including good Unicode support, integer division, and the concept of type hints.

Modern Python (2020s): Active development is going on for performance gains, pattern matching (Python 3.10), and efficient management of memory.

With the continued growth and evolution of Python, it has made its place as a dominant computer language widely used in fields like AI, machine learning, web development, and automation.

Download the Pdf for exams History of python and all

Why Learn Python in 2025 ?

• Easy to learn and use
• Large community support
• Versatile (used in web development, machine learning, automation, etc.)
• Rich ecosystem of libraries and frameworks

What are the Features of Python pdf

Python has drawn considerable attention and importance in its features, making it popular among developers:

Easy to Read and Write: Due to simple syntax which is very similar to natural language, Python has become beginner-friendly and easy to learn.

Interpreted Language: Python runs line by line, so it is easier to debug.

Dynamically Typed: Variables do not need to be declared explicitly.

Object-Oriented Programming (OOP): It has classes and objects for modular and reusable code.

Large Standard Library: It is available with built-in modules for file I/O, networking, and so on.

Cross-Platform: It runs on Windows, macOS, and Linux without modification.

Memory Management: Automatic garbage collection allows optimizing the memory.

High Level Language: No direct requirement for memory management, unlike in C/C++.

Multi-Paradigm: It supports procedural as well as object-oriented and functional programming.

Integration Capability: It can quite easily be integrated into applications built in C, C++, Java, and .NET.

Open-Source: Publicly accessible and has very active community support.

Multi-Threading and Multiprocessing: Execution of tasks concurrently.

Machine Learning and Data Science Supported: Popular libraries are NumPy, Pandas, TensorFlow, and Scikit-learn.

Web Development: Easily develop web applications using frameworks like Django and Flask.

Automation and Scripting: Can automate repetitive tasks.

how to install Python step by step Guide

You can download Python from its official site, which is python.org.

To check whether Python is installed, invoke the command stated below in your terminal or command prompt:

python --version

how to Write Hello world Program in python javatpoint

Create a file named hello.py and add the following code:

print("Hello, World!")

Run the program using:

python hello.py

Python Basics for Beginners javatpoint pyhton tutorials

what is the Variables and Data Types in python

Python variables can store data. Unlike statically typed languages in which explicit declaration of a variable type is mandatory, in Python, it is not. Python is dynamically typed: the interpreter assigns the type at run time, based on the value assigned. Below are some of the common data types of Python.

x = 10        # Integer
y = 3.14      # Float
name = "John" # String
is_valid = True # Boolean

Control Flow statement in python

Flow control in Python refers to the sequential execution of individual statements, instructions, or function calls. Python provides several control structures like conditional statements or loops for controlling the flow of execution within a program.

Conditional Statements program in python

age = 18
if age >= 18:
    print("You are an adult.")
else:
    print("You are a minor.")

Loops in python pdf for exams of bca and b.tech

Loops in Python are control structures that allow repeated execution of a block of code. There are two primary types of loops:

1. For Loop: Iterates over a sequence (e.g., list, tuple, string).

for i in range(5): print(i)

1. While Loop: Repeats a block of code as long as a condition remains true.

count = 0 while count < 5: print(count) count += 1

Loops help automate repetitive tasks efficiently. Let me know if you need further details!

Explain what is function in python?

Functions in Python are code blocks that can be reused for a specific purpose. They help in making a program modular, increasing the readability of code, and eliminating redundancy.

what are the key components of function in python

Function Definition: Defined using the def keyword.

Parameters: Variables that accept inputs.

Return Statement: Returns a value (optional).

def greet(name):
    return f"Hello, {name}!"

print(greet("Alice"))

Here, greet is a function that takes a name parameter and returns a greeting message

Data Structures In python javatpoint

Lists

fruits = ["apple", "banana", "cherry"]
fruits.append("orange")
print(fruits)

Tuples

coordinates = (10, 20)
print(coordinates[0])

Dictionaries

person = {"name": "Alice", "age": 25}
print(person["name"])

explain Object-Oriented Programming (OOP) in Python

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age
    
    def introduce(self):
        return f"My name is {self.name} and I am {self.age} years old."

p = Person("Alice", 25)
print(p.introduce())

File Handling in Python javatpoint

# Writing to a file
with open("sample.txt", "w") as file:
    file.write("Hello, Python!")

# Reading from a file
with open("sample.txt", "r") as file:
    content = file.read()
    print(content)

Python Exception Handling

try:
    x = 10 / 0
except ZeroDivisionError:
    print("Cannot divide by zero!")

Modules and Libraries in Python

Python has a vast collection of built-in and third-party libraries.

Using Built-in Modules

import math
print(math.sqrt(16))

How to Installing and Using External Libraries

Install external libraries using pip:

import requests
response = requests.get("https://www.example.com")
print(response.status_code)

Python has been widely regarded as a powerful yet easy language for beginners. It is an excellent way to learn the basics of Python javatpoint and step into various areas, such as web development, data science, and automation. Happy coding!