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Topic: Handling Datasets of All Types – Part 1 of 5: Introduction and Basic Concepts --- 1. What is a Dataset? • A dataset is a structured collection of data, usually organized in rows and columns, used for analysis or training machine learning models. --- 2. Types of Datasets • Structured Data: Tables, spreadsheets with rows and columns (e.g., CSV, Excel). • Unstructured Data: Images, text, audio, video. • Semi-structured Data: JSON, XML files containing hierarchical data. --- 3. Common Dataset Formats • CSV (Comma-Separated Values) • Excel (.xls, .xlsx) • JSON (JavaScript Object Notation) • XML (eXtensible Markup Language) • Images (JPEG, PNG, TIFF) • Audio (WAV, MP3) --- 4. Loading Datasets in Python • Use libraries like pandas for structured data:

    
        import pandas as pd
df = pd.read_csv('data.csv'){}
    

• Use libraries like json for JSON files:

    
        import json
with open('data.json') as f:
    data = json.load(f){}
    

--- 5. Basic Dataset Exploration • Check shape and size:

    
        print(df.shape){}
    

• Preview data:

    
        print(df.head()){}
    

• Check for missing values:

    
        print(df.isnull().sum()){}
    

--- 6. Summary • Understanding dataset types is crucial before processing. • Loading and exploring datasets helps identify cleaning and preprocessing needs. --- Exercise • Load a CSV and JSON dataset in Python, print their shapes, and identify missing values. --- #DataScience #Datasets #DataLoading #Python #DataExploration The rest of the parts 👇 https://t.me/DataScienceM 🌟

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Topic: Python Script to Convert a Shared ChatGPT Link to PDF – Step-by-Step Guide --- ### Objective In this lesson, we’ll build a Python script that: • Takes a ChatGPT share link (e.g., https://chat.openai.com/share/abc123) • Downloads the HTML content of the chat • Converts it to a PDF file using pdfkit and wkhtmltopdf This is useful for archiving, sharing, or printing ChatGPT conversations in a clean format. --- ### 1. Prerequisites Before starting, you need the following libraries and tools: #### • Install pdfkit and requests

    
        pip install pdfkit requests{}
    

#### • Install wkhtmltopdf Download from: https://wkhtmltopdf.org/downloads.html Make sure to add the path of the installed binary to your system PATH. --- ### 2. Python Script: Convert Shared ChatGPT URL to PDF

    
        import pdfkit
import requests
import os

# Define output filename
output_file = "chatgpt_conversation.pdf"

# ChatGPT shared URL (user input)
chat_url = input("Enter the ChatGPT share URL: ").strip()

# Verify the URL format
if not chat_url.startswith("https://chat.openai.com/share/"):
    print("Invalid URL. Must start with https://chat.openai.com/share/")
    exit()

try:
    # Download HTML content
    response = requests.get(chat_url)
    if response.status_code != 200:
        raise Exception(f"Failed to load the chat: {response.status_code}")

    html_content = response.text

    # Save HTML to temporary file
    with open("temp_chat.html", "w", encoding="utf-8") as f:
        f.write(html_content)

    # Convert HTML to PDF
    pdfkit.from_file("temp_chat.html", output_file)

    print(f"\n✅ PDF saved as: {output_file}")

    # Optional: remove temp file
    os.remove("temp_chat.html")

except Exception as e:
    print(f"❌ Error: {e}"){}
    

--- ### 3. Notes • This approach works only if the shared page is publicly accessible (which ChatGPT share links are). • The PDF output will contain the web page version, including theme and layout. • You can customize the PDF output using pdfkit options (like page size, margins, etc.). --- ### 4. Optional Enhancements • Add GUI with Tkinter • Accept multiple URLs • Add PDF metadata (title, author, etc.) • Add support for offline rendering using BeautifulSoup to clean content --- ### Exercise • Try converting multiple ChatGPT share links to PDF • Customize the styling with your own CSS • Add a timestamp or watermark to the PDF --- #Python #ChatGPT #PDF #WebScraping #Automation #pdfkit #tkinter https://t.me/CodeProgrammer ✅

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