Data Science with Python

1.1 Introduction to Python

Python is a high-level, interpreted programming language that is easy to learn and widely used for web development, data analysis, AI, and more.

Explanation:-
No code for this topic.

1.2 Installing Python

Python can be installed from python.org. IDEs like VS Code, PyCharm, or Jupyter Notebook can be used for coding.

Explanation:-
No code for this topic.

1.3 Hello World

The first program prints text to the screen using the print() function.

print("Hello World")

Explanation:-
print() outputs the text "Hello World" to the console.

# Alternative print example
print("Hi there!")

Explanation:-
Alternative way to print a message.

1.4 Python Comments

Comments are used to explain code and are ignored by the interpreter.

# This is a comment
print("Hello")

Explanation:-
Lines starting with # are ignored. Only print("Hello") executes.

# Multi-line comment
"""
This is a comment
"""

Explanation:-
Alternative way to write multi-line comment.

1.5 Variables

Variables store data values and can be named anything following Python naming rules.

x = 10
y = "Kapil"
print(x, y)

Explanation:-
x stores integer 10, y stores string "Kapil". print() displays both values.

z = 3.14
print(z)

Explanation:-
z stores float value 3.14.

1.6 Data Types

Python supports different data types like int, float, string, list, tuple, set, dictionary, etc.

x = 5
y = 3.14
name = "Kapil"

Explanation:-
int, float, and string examples.

nums = [1,2,3,4]

Explanation:-
A list example.

1.7 Type Conversion

Convert one data type to another using int(), float(), str(), etc.

x = int(3.14)
print(x)

Explanation:-
Float 3.14 converted to int 3.

y = str(100)
print(y)

Explanation:-
Integer 100 converted to string "100".

1.8 Operators

Python supports arithmetic, comparison, logical, assignment, and bitwise operators.

a = 5
b = 2
print(a+b, a-b, a*b, a/b)

Explanation:-
Arithmetic operations example.

print(a==b, a!=b, a>b, a<b)

Explanation:-
Comparison operations example.

1.9 Conditional Statements

Use if, elif, and else to execute code based on conditions.

x = 10
if x>5:
    print("Greater than 5")

Explanation:-
Simple if statement example.

x = 2
if x>5:
    print("Yes")
else:
    print("No")

Explanation:-
If-else statement example.

1.10 Loops - for & while

Loops allow you to execute code multiple times.

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

Explanation:-
For loop example.

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

Explanation:-
While loop example.

1.11 Quiz - Python Basics

Test your understanding of Python basics.

Quiz: Test Your Knowledge

Q3. What data type is returned by input() function?

int
str
float
bool

Q1. Which function is used to display output in Python?

display()
show()
print()
output()

Q2. Which symbol is used for comments in Python?

//
#
/* */
--

Lesson 1: Python Basics

1.1 Introduction to Python

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1.2 Installing Python

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1.3 Hello World

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1.4 Python Comments

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1.5 Variables

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1.6 Data Types

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1.7 Type Conversion

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1.8 Operators

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1.9 Conditional Statements

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1.10 Loops - for & while

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1.11 Quiz - Python Basics

Quiz: Test Your Knowledge

Lesson 2: NumPy & Pandas Fundamentals

Lesson 3: Pandas Advanced & Visualization

Lesson 4: Data Handling with Pandas

Lesson 5: Data Preprocessing & ML Introduction

Lesson 6: Introduction to Supervised Learning

Lesson 7: Linear Regression & Multiple Regression

Lesson 8: Logistic Regression

Lesson 9: Decision Trees & Random Forest

Lesson 10: Support Vector Machines & K-NN

Lesson 11: Model Optimization & Evaluation

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