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‎index.ipynb‎

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{
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"cells": [
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{
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"cell_type": "markdown",
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"id": "bb15401b",
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"metadata": {},
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"source": [
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"# 🐍 Python Basics Notebook\n",
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"This notebook contains fundamental concepts of Python programming with examples and explanations."
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]
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},
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{
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"cell_type": "markdown",
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"id": "c8d60193",
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"metadata": {},
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"source": [
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"## 1. Variables and Data Types\n",
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"Variables are containers for storing data values. Python has various data types like int, float, string, boolean, etc."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "f62bfe24",
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"metadata": {},
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"outputs": [],
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"source": [
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"name = \"Shivam\"\n",
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"age = 21\n",
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"height = 5.9\n",
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"is_student = True\n",
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"\n",
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"print(name, age, height, is_student)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "92c7bca5",
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"metadata": {},
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"source": [
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"## 2. Type Casting\n",
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"You can convert values from one data type to another."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "805b5c2f",
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"metadata": {},
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"outputs": [],
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"source": [
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"x = 5\n",
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"y = float(x)\n",
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"name = str(x)\n",
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"print(x, y, name)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "4f288f83",
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"metadata": {},
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"source": [
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"## 3. Input from User"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "acf67901",
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"metadata": {},
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"outputs": [],
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"source": [
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"user_name = input(\"Enter your name: \")\n",
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"print(\"Welcome,\", user_name)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "018ff0ce",
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"metadata": {},
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"source": [
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"## 4. Conditional Statements\n",
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"Used to execute code based on conditions."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "75675993",
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"metadata": {},
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"outputs": [],
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"source": [
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"marks = 85\n",
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"if marks >= 90:\n",
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" print(\"Grade A\")\n",
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"elif marks >= 75:\n",
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" print(\"Grade B\")\n",
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"else:\n",
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" print(\"Grade C\")"
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]
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},
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{
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"cell_type": "markdown",
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"id": "c92be02a",
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"metadata": {},
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"source": [
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"## 5. Loops\n",
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"Used for iteration."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "ca96278d",
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"metadata": {},
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"outputs": [],
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"source": [
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"# For loop\n",
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"for i in range(1, 6):\n",
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" print(i)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "35996e7d",
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"metadata": {},
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"outputs": [],
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"source": [
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"# While loop\n",
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"count = 0\n",
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"while count < 3:\n",
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" print(\"Counting:\", count)\n",
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" count += 1"
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]
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},
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{
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"cell_type": "markdown",
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"id": "74e01974",
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"metadata": {},
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"source": [
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"## 6. Functions\n",
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"Functions are reusable blocks of code."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "73782cf0",
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"metadata": {},
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"outputs": [],
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"source": [
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"def add(a, b):\n",
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" return a + b\n",
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"\n",
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"add(10, 5)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "78d3ebfc",
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"metadata": {},
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"source": [
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"## 7. Lists, Tuples, and Sets"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "a2adcccf",
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"metadata": {},
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"outputs": [],
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"source": [
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"# List\n",
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"fruits = [\"apple\", \"banana\", \"cherry\"]\n",
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"print(fruits[1])"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "943383aa",
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"metadata": {},
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"outputs": [],
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"source": [
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"# Tuple\n",
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"colors = (\"red\", \"green\", \"blue\")\n",
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"print(colors[0])"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "7e31f1c1",
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"metadata": {},
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"outputs": [],
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"source": [
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"# Set\n",
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"nums = {1, 2, 3, 2}\n",
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"print(nums)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "7fa80a3c",
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"metadata": {},
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"source": [
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"## 8. Dictionaries\n",
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"Key-value pairs to store data."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "0d0c658f",
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"metadata": {},
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"outputs": [],
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"source": [
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"student = {\"name\": \"Shivam\", \"age\": 21, \"grade\": \"A\"}\n",
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"print(student[\"grade\"])"
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]
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},
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{
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"cell_type": "markdown",
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"id": "db65197c",
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"metadata": {},
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"source": [
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"## 9. Loops with Lists and Dictionaries"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "6b660129",
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"metadata": {},
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"outputs": [],
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"source": [
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"# Loop through list\n",
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"for fruit in fruits:\n",
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" print(fruit)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "792cc111",
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"metadata": {},
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"outputs": [],
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"source": [
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"# Loop through dictionary\n",
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"for key, value in student.items():\n",
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" print(key, \"=\", value)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "e32bb396",
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"metadata": {},
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"source": [
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"## 10. String Methods"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "215cde95",
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"metadata": {},
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"outputs": [],
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"source": [
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"message = \" Hello Python! \"\n",
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"print(message.strip())\n",
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"print(message.lower())\n",
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"print(message.upper())\n",
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"print(message.replace(\"Python\", \"World\"))"
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]
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},
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{
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"cell_type": "markdown",
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"id": "a1f0191f",
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"metadata": {},
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"source": [
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"## 11. File Handling"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "24cfb30e",
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"metadata": {},
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"outputs": [],
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"source": [
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"with open(\"sample.txt\", \"w\") as f:\n",
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" f.write(\"This is a test file.\")\n",
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"\n",
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"with open(\"sample.txt\", \"r\") as f:\n",
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" content = f.read()\n",
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" print(content)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "c8853f74",
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"metadata": {},
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"source": [
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"## 12. Exception Handling"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "c7fde07c",
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"metadata": {},
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"outputs": [],
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"source": [
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"try:\n",
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" result = 10 / 0\n",
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"except ZeroDivisionError:\n",
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" print(\"You can't divide by zero!\")\n",
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"finally:\n",
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" print(\"This block always runs.\")"
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]
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},
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{
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"cell_type": "markdown",
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"id": "045a2989",
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"metadata": {},
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"source": [
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"## Summary\n",
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"We’ve now seen the basics of Python including variables, data types, conditions, loops, functions, collections, and more. Practice more to become confident!"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.11.7"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}

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