🗺️ Python Roadmap

# Aapne seekh liya:
# ✅ Variables, Data Types
# ✅ Strings, Numbers
# ✅ Conditions, Loops
# ✅ Lists, Tuples, Sets, Dict
# ✅ Functions, OOP
# ✅ File Handling, Error Handling
# ✅ Modules, Comprehension
# ✅ Decorators, Generators, Regex
print("Congratulations! Python basics complete! 🎉")

# Flask — lightweight web framework
from flask import Flask

app = Flask(__name__)

@app.route("/")
def home():
    return "Namaste! Python web server chal raha hai!"

if __name__ == "__main__":
    app.run(debug=True)

# pip install flask
# python app.py
# Browser mein: http://localhost:5000

import pandas as pd
import numpy as np

# DataFrame — table jaisa data structure
data = {
    "Name":   ["Rahul", "Priya", "Amit"],
    "Marks":  [85, 92, 78],
    "Grade":  ["B", "A", "C"]
}
df = pd.DataFrame(data)
print(df)
print(f"Average: {df['Marks'].mean()}")

# Chapter 20: Python Roadmap — Advanced Practice
print("=== Python Roadmap Practice ===")

# Example 1: Basic usage
result = "Python mein Python Roadmap bahut powerful hai!"
print(result)

# Example 2: Real world use
data = ["Python Roadmap", "Python", "Hindi", "PythonHindi.in"]
for item in data:
    print(f"Item: {item}")

print("\nPractice complete! Great job! 🎉")

# Chapter 20: Python Roadmap — Advanced Examples
# Yeh code copy karo aur run karo!

# Example 1: Basic concept
print("=== Chapter 20: Python Roadmap ===")

# Example 2: List operations
items = ["Python", "Hindi", "Code", "Practice"]
for i, item in enumerate(items, 1):
    print(f"{i}. {item}")

# Example 3: Dictionary usage
chapter_info = {
    "number": 20,
    "title":  "Python Roadmap",
    "level":  "Intermediate",
    "done":   False
}
for key, value in chapter_info.items():
    print(f"  {key:10}: {value}")

# Example 4: Function
def practice_summary(chapter, completed=False):
    status = "Complete ✅" if completed else "In Progress ⏳"
    return f"Chapter {chapter}: {status}"

print(practice_summary(20))
print(practice_summary(20, True))