Data Science

Data science is an inter-disciplinary field that uses scientific methods, processes, algorithms, and systems to extract knowledge from structured and unstructured data. Data scientists perform data analysis and preparation, and their findings inform high-level decisions in many organizations.

GitHub: https://github.com/topics/data-science
Wikipedia: https://en.wikipedia.org/wiki/Data_science
Related Topics: data-analysis, data-mining, machine-learning, big-data, data-visualization,
Aliases: datasciences, data-science-project, data-science-algorithm,
Last updated: 2026-07-10 00:07:44 UTC
JSON Representation

https://github.com/rbitr/cpa

LLM / AI data science agent, using Anthropic's Claude and PANDAS

agents anthropic claude data-science pandas

Last synced: 12 Feb 2026

https://github.com/moindalvs/interview_qna_statistics_data_science

Data Science Statistics Interview Questions

central-limit-theorem data-science distributions hypothesis-tests linear-regression sampling-theory statistics

Last synced: 19 Mar 2026

https://github.com/imartinezl/data-science-roles

Study on data science roles

analysis competences data-science data-scientist nlp profiles roles skills

Last synced: 28 Feb 2026

https://github.com/docsallover/helmet-and-plate-detection

Helmet and Number Plate Detection using YOLOv3 with opencv and python

data-science detection jupyter-notebook machine-learning numpy opencv python tenserflow yolo yolov3

Last synced: 13 Feb 2026

https://github.com/alexfrancow/cms_version_detector_poc

A Machine Learning application that detects versions of WordPress with Multi-Class classification algorithms.

cms cybersecurity data-science footprinting infosec machine-learning pandas python3 random-forest scikit-learn tool wordpress

Last synced: 12 Oct 2025

https://github.com/gastonstat/stat154

STAT 154: Modern Statistical Prediction and Machine Learning

classification-model clustering data-science machine-learning multivariate-analysis predictive-modeling principal-component-analysis statistical-learning statistics syllabus

Last synced: 23 Feb 2026

https://github.com/solegalli/imbalanced-data-myths-mistakes-solutions

Code repository for the book "Imbalanced Data: Myths, Mistakes and Modern Solutions".

cost-sensitive-learning data-preparation data-preprocessing data-science imbalanced-classification imbalanced-data imbalanced-learning imblearn machine-learning machine-learning-algorithms python scikit-learn

Last synced: 22 Jun 2026

https://github.com/joanmartin/uib-masterinbigdata

Master's degree of Big Data Analysis in Economics and Business

big-data data-analysis data-science igraph machine-learning machine-learning-algorithms matplotlib pandas python r sklearn

Last synced: 10 Oct 2025

https://github.com/mine-cetinkaya-rundel/teach-data-public-good

Materials for the JSM 2020 session "Teaching with Data for the Public Good"

data-science education jsm2020 public-good statistics

Last synced: 21 Jan 2026

https://github.com/seandavi/campus-llm-kb

campus-llm-kb

chatgpt data-science education gpt healthcare large-language-models

Last synced: 10 Jan 2026

https://github.com/stefantaubert/quora-competition

Code for Quora Competition on Kaggle

data-science dataset evaluation jaccard kaggle lemmatization levenshtein nlp python quora quora-competition quora-question-pairs random-search tfidf tokenization xgboost

Last synced: 14 Oct 2025

https://github.com/FullStackWithLawrence/aws-rekognition

A facial recognition micro service

12-factor api-gateway automated-testing aws aws-rekognition ci-cd data-science dependabot docker-compose github-actions lambda lambda-functions mergify pre-commit-hooks python rekognition rekognition-workshop terraform

Last synced: 27 Jun 2026

https://github.com/mineralogy-rocks/mr-api

API for retrieving mineralogical and the related analytical data

data-science django django-rest-framework mineralogy

Last synced: 07 May 2026

https://github.com/liamarguedas/walmart-sales-forecast

Yearly Sales forecast for Walmart US Stores

data-science forecasting machine-learning

Last synced: 06 May 2026

https://github.com/noahbass/parallel-computing-project

Sentiment analysis of reddit.com commenters

data-science hdfs nlp-machine-learning python spark

Last synced: 05 May 2026

https://github.com/pegah-ardehkhani/corona-virus-forecasting-and-analysis

Analysis and Forecasting of the Corona Virus Observed, Recovered and Death Cases Using Machine Learning Models and Plotly Library

coronavirus covid-19 data-science exploratory-data-analysis exploratory-data-visualizations machine-learning plotly python r r-programming time-series time-series-analysis time-series-forecasting time-series-prediction vaccination vaccination-rates vaccine

Last synced: 05 May 2026

https://github.com/vandita2020/merra2_nasa_wind_speed_analysis

In this study, we aim to explore the vulnerability of power grids in the south-east region of the USA with the help of data analysis tools and machine learning algorithms

data-analysis data-science machine-learning-algorithms python

Last synced: 09 Jun 2026

https://github.com/cagov/aae-dsa-water

The California State Water Resources Control Board Division of Drinking Water and the Office of Data and Innovation forecast which community water systems risk of running out of water

data-science machine-learning

Last synced: 03 May 2026

https://github.com/blazer-007/movie-recommendation-system

Movie Recommendation System Project using Pandas

data-science movie-recommendation-system numpy pandas

Last synced: 03 May 2026

https://github.com/ndleah/road-fatalities-prediction

🚦Logistics regression, accident factors contributed to road tolls

data-science logistic-regression machine-learning predictive-modeling

Last synced: 19 Jan 2026

https://github.com/wahyudesu/dicoding-rock-scissor-paper

data data-science image-classification image-recognition neural-network python

Last synced: 02 May 2026

https://github.com/tharunkumarreddy5/ml-pipeline-analyzer

Python package that analyze, visualize and suggest any changes to the machine learning pipeline

data-science flask machine-learning python

Last synced: 24 Oct 2025

https://github.com/tushar2704/instagram-user-analytics

This project revolves around the exploration and analysis of user engagement patterns on the popular social media platform, Instagram. By delving into user data and interaction metrics, this project aims to provide valuable insights into user behavior, content performance, and trends.

artificial-intelligence data-analysis data-science instagram project tushar2704

Last synced: 23 Jan 2026

https://github.com/dnth/fastdup-manage-clean-curate-blogpost

Find duplicate and anomalies in your dataset. Identify wrong/confusing labels in your dataset. Uncover data leak in your dataset.

anomaly-detection computer-vision data-science data-validation duplicate-detection python

Last synced: 01 May 2026

https://github.com/udityamerit/python-librearies-for-data-science

Python libraries for data science enable efficient data manipulation, analysis, and modeling. Key libraries include NumPy for numerical computing, pandas for data handling, Matplotlib for visualization, Scikit-learn for machine learning, TensorFlow for deep learning, and BeautifulSoup/requests for web scraping. These libraries simplify complex data

beautifulsoup data data-science data-science-libraries machine-learning matplotlib numpy pandas requests scikit-learn scikitlearn-machine-learning tensorflow

Last synced: 06 Feb 2026

https://github.com/tirendazacademy/pytorch-lightning-tutorials

Hands-on PyTorch-Lightning examples

ai-tutorial data-science deep-learning image-classification lightning machine-learning python pytorch pytorch-learning pytorch-lightning pytorch-lightning-tutorial pytorch-tutorial text-classification

Last synced: 30 Apr 2026

https://github.com/inphyt/.github

Special repository containing the profile directory of InPhyT.

data-management data-science epidemiology graphs health interdisciplinary julia-language network-analysis neuroscience physics research research-and-development social-science

Last synced: 08 Jun 2026

https://github.com/asma-hachaichi/prediction-of-obesity-risk

This notebook presents a concise analysis for predicting obesity risk using machine learning models like Random Forest and XGBoost. Focused on identifying key factors influencing obesity through exploratory data analysis (EDA) and predictive modeling, the notebook offers insights into effective prevention strategies.

artificial-intelligence data-science machine-learning obesity prediction random-forest streamlit xgboost

Last synced: 30 Apr 2026

https://github.com/wiese-m/survival-studio

Survival Studio - a tool for automatic and interactive exploration of complex survival models. The project is carried out as part of the master's thesis supervised by Przemyslaw Biecek.

dashboard-application data-science explainable-ml plotly python survival-models

Last synced: 13 May 2026

https://github.com/ahmedheakl/data_scientists_salary_prediction

A project to predict the salary of data scientists jobs across America using Data Collected from web scraping.

data-science flask machine-learning pandas python

Last synced: 29 Apr 2026

https://github.com/wahyudesu/life-expectancy-analysis

data-science life-expectancy machine-learning python regression

Last synced: 08 Jun 2026

https://github.com/nhsdigital/mps_diagnostics

Interpretable metadata for the results of NHS England record linkage

data-linkage data-science nhs-digital nhs-england pyspark record-linkage spark

Last synced: 28 Apr 2026

https://github.com/aianytime/recommendation_system_implementation

Complete concepts behind implementing a Recommendation System using Association Rules, Collaborative Filtering, and Matrix Factorization.

collaborative-filtering data-science machine-learning matrix-factorization python recommender-system scikit-learn

Last synced: 28 Apr 2026

https://github.com/mukhopadhyay/opendata

Open Data ❤️

data data-science datasets deep-learning kaggle kaggle-dataset machine-learning open-source opendata

Last synced: 25 Apr 2026

https://github.com/bradleyboehmke/learninganalytics

An R package that provides a structured learning environment to deliver tutorials covering various statistical learning techniques

data-science education r statistical-learning teaching

Last synced: 19 Oct 2025

https://github.com/phillipai/python-and-machine-learning-for-financial-analysis

Python & Machine Learning for Financial Analysis

data-science finance financial-analysis machine-learning python

Last synced: 24 Apr 2026

https://github.com/amitkaps/dsvis

Data Visualisation for Data Science

data-science data-visualization interactive multi-dimensional python r

Last synced: 20 Apr 2026

https://github.com/jiveyguy/meteorite_data_mine

For NMSU CS 488

data-science machine-learning meteor nasa

Last synced: 28 Jan 2026

https://github.com/olgaele/playing-with-julia

Playing with data!

data data-analysis data-science julia statistics

Last synced: 19 Apr 2026

https://github.com/pegah-ardehkhani/deep-neural-network-from-scratch

"Deep Neural Network" from Scratch

data-science deep-learning deep-neural-networks from-scratch from-scratch-in-python hidden-layers machine-learning neural-network python

Last synced: 18 Apr 2026

https://github.com/grand-27-master/data-science-course

One-stop repo for learning data science along with roadmap!

data-analysis data-science machine-learning python statistics

Last synced: 12 May 2026

https://github.com/henfrydls/email_extrator

This program is able to extract emails from pdf, json and txt files, some websites may apply, then it shows you which all domains found and ask you which one you want to export. At the end you have the option to export it as a pdf, xlsm, docx, txt, json and csv. Created by Henfry de los Santos (2021)

data-science email email-extractor pandas-python python tkinter

Last synced: 04 Apr 2026

https://github.com/arhcoder/artificial-intelligence

🧠 Main repository where I compile all I code while learning Artificial Intelligence; Machine Learning, Metaheuristics, Evolutionary Programming, Data Science, Statistics, etc.

artificial-intelligence data-science evolutionary-algorithms machine-learning metaheuristics python

Last synced: 12 May 2026

https://github.com/totonga/odsbox-jaquel-mcp

MCP server to work with odsbox to access ASAM ODS HTTP API.

ai-agents asam data-analysis data-science mcp ods

Last synced: 11 Apr 2026

https://github.com/glue-viz/glue-ar

Export views from glue to augmented reality

3d-models augmented-reality data-science python visualization

Last synced: 17 Mar 2026

https://github.com/lebrancconvas/python-scraping

Web Scraping by using Python.

data-science jupyter-notebook personal-project python python3 side-project web-scraping

Last synced: 16 Apr 2026

https://github.com/ahammadmejbah/become-data-scientist-a-complete-roadmap

To become a data scientist, follow these steps: 1. Learn programming (Python, R). 2. Acquire math and statistics skills. 3. Master data analysis and visualization. 4. Study machine learning and deep learning. 5. Gain domain knowledge. 6. Build a portfolio and seek job opportunities.

data-science data-structures data-visualization

Last synced: 03 Feb 2026

https://github.com/baci-ak/b-vista

Interactive EDA tool to explore pandas DataFrames — via Python, notebooks & Docker

analytics data-analysis data-science data-visualization dataframe docker eda flask flexible ipython jupyter notebook pandas python react visualization

Last synced: 22 Jul 2025

https://github.com/suji04/chat_entropy_analysis

A simple python script to find and compare WhatsApp chat entropy

data-science entropy python3 shannon-entropy whatsapp

Last synced: 22 Jun 2025

https://github.com/sayakpaul/patients-conversation-detector

Contains my experiments for ZS's hiring hackathon (II).

data-science keras machine-learning nlp python scikit-learn text-classification

Last synced: 23 Apr 2025

https://github.com/manuelgilm/data_science-portafolio

data-science machine-learning portfolio python tensorflow

Last synced: 16 Jan 2026

https://github.com/dalmia/bayesian_decision_making-datagiri_mumbai

Jupyter notebook accompanying my talk on "Bayesian Decision Making" for DataGiri

artificial-intelligence data-science datagiri machine-learning maximum-likelihood-estimation python

Last synced: 11 Mar 2026

https://github.com/realiti4/tft-pytorch

Pytorch Temporal Fusion Transformers

data-science deep-learning forecasting machine-learning pytorch time-series timeseries-forecasting

Last synced: 09 Mar 2026

https://github.com/munoztd0/hitchhikers_guide_to_the_brain

The idea behind this website is to make available all the resources I have gathered/created over the years make other people's life easier.

data-science matlab neuroimaging-data-science neuroscience python r

Last synced: 14 Apr 2025

https://github.com/pegah-ardehkhani/python-tutorial-plus-questions

A comprehensive Python tutorial repository that covers key programming concepts along with practical questions and examples

conditional-statements data-science data-structures exercises functions learn-to-code object-oriented-programming oop oops-in-python programming python python-exercises python-programming python-questions python-tutorial python-tutorial-notebook python3 tutorial tutorial-code tutorial-exercises

Last synced: 14 Apr 2025

https://github.com/rcdilorenzo/fda-510k-medical-devices

Data Science Project: OpenFDA Exploration Webapp

chartjs data-science frp regis-university webapp

Last synced: 18 Jan 2026

https://github.com/omkarpattnaik8080/numpy01

Learning Numpy library

data-science numpy

Last synced: 07 May 2026

https://github.com/mateuseap/dog_voila

Dog breeds classifier

dashboards data-science deep-learning deployment jupyter jupyter-notebook machine-learning python voila

Last synced: 20 May 2026

https://github.com/JoseChirif/Job-Studies-relationship-a-kaggle-survey

Trabajo de Data science sobre una encuesta de empleo de Kaggle. Link en el notebook y README

data data-science python

Last synced: 24 Apr 2025

https://github.com/bala-1409/price-prediction-for-used-cars-datascience-project

This project uses machine learning to predict the price of a used car. The model is trained on a dataset of historical car sales data, and it can then be used to predict the price of a car based on its features.

adaboost-regressor data-science kaggle-dataset machine-learning price-prediction regression regression-model supervised-learning used-cars-price-prediction

Last synced: 22 Mar 2025

https://github.com/sabyasachi-seal/lgmvip-datascience

Projects for my internship under LetsGrowMore

analysis data-science internship-task letsgrowmore

Last synced: 26 Feb 2025

https://github.com/shervinnd/bitcoin-price-prediction-ml-dl

Predict Bitcoin prices with ML & DL models! 📈 Uses Ridge, Lasso, Random Forest, MLP, RNN & LSTM with hyperparameter tuning. 📊 Visualizes predictions & ROC curves. 🚀 Fetch data via yfinance, evaluate with MSE/R2. Perfect for crypto enthusiasts! 💸

cryptocurrency data-science data-visualization decision-tree deep-learning financial-modeling machine-learning neural-networks predictive-analytics price-prediction python random-forest regression rnn scikit-learn simple-rnn tensorflow time-series yfinance

Last synced: 15 Oct 2025

https://github.com/merekat/children-stories

OhanashiGPT is an application that generates personalized children's stories based on parameters like age and preferences. It narrates these stories using an AI-generated voice that mimics a parent, trained on their audio samples. The app also creates illustrations to accompany each story, providing a unique and engaging experience for children.

ai audio-generation data-science image-generation large-language-models llama lora lux neural-networks stable-diffusion story text-generation tts xtts

Last synced: 04 Jul 2025

https://github.com/mine-cetinkaya-rundel/2021-eku-design-ds

data-science education statistics teaching

Last synced: 12 Feb 2026

https://github.com/ctsrc/mdrun

Runs command-line pipelines embedded in Markdown and CommonMark documents. Keeps your authored docs up to date. Even usable as an alternative to IPython notebooks.

abstract-syntax-tree ast commonmark computer-science data-science devops iac infrastructure-as-code markdown qa quality-assurance software-development software-engineering sre technical-writing writing-tool

Last synced: 02 Aug 2025

https://github.com/guoriyue/PKU-Data-Mining-2022-TA

data-science datamining gan pku quantization

Last synced: 31 Mar 2025

https://github.com/architsingh15/sigma-cabs-surge-pricing_predictions

Surge Pricing Prediction

data-analytics data-science machine-learning python xgboost

Last synced: 27 Jun 2025

https://github.com/devinit/digital-platform

PostgreSQL/analyst → MongoDB → Development Data Hub

data-science datasets digital-platform nodejs

Last synced: 24 Apr 2025

https://github.com/dayyass/bachelor-diploma

Diploma thesis: "Assessment of credit organizations borrowers' default rate" (2019).

data-science diploma econometrics machine-learning statistics

Last synced: 08 Aug 2025

https://github.com/ashishpatel26/parul-university-sttp-on-data-analysis-with-python

Data Analysis with Python STTP at Parul University

data-science dataanalysis python

Last synced: 14 May 2025

https://github.com/angelmtenor/data-science-keras

Data science projects with Keras

data-science deep-learning jupyter-notebook keras machine-learning natural-language-processing recurrent-neural-networks

Last synced: 26 Oct 2025

https://github.com/aadya940/numpyai

A Natural Language Interface to the Numpy Library using LLMs.

ai data-analysis data-science library llm machine-learning numpy python

Last synced: 12 Apr 2025

https://github.com/alyssonmach/9-data-science-apps-with-python

[freeCodeCamp Course]: build interactive and data-driven web apps in Python using the Streamlit library.

data-analysis data-science data-visualization machine-learning streamlit-webapp

Last synced: 12 Feb 2026

https://github.com/methyldragon/knowledge-hoard

Manifold disparate and esoteric concepts, easily found and concisely explained 📖🐲🔥

computer-science computer-vision data-science engineering machine-learning math mathematics notes

Last synced: 04 Jan 2026

https://github.com/ahammadmejbah/ibm-project-03-analyzing-spreadsheet-data-with-python

Spreadsheets are computer programs that allow users to enter, view, and change information in a gridlike format. One of the most useful programs on a PC is a spreadsheet, which allows users to organize data in tabular form. A spreadsheet's primary purpose is to store numerical data and sometimes a few words of text.

data-analysis data-analysis-python data-analyst data-science excel python spreadsheet

Last synced: 27 Apr 2025

https://github.com/1995parham-teaching/dimensionality-reduction

Reduce the curse of dimensionality

data-science dimentionality-reduction machine-learning teaching

Last synced: 05 Sep 2025

https://github.com/geoninja/analytics

Repository of R code for the course "The Analytics Edge" offered by MIT via edX.

analytics analytics-edge data-science edx kaggle r

Last synced: 22 May 2026

https://github.com/touppercase78/real-racing-3-vehicles

Datasets and Analyses for All Vehicles in Real Racing 3

data-analysis data-science datasets electronic-arts firemonkey jupyter-notebook mobile-game python racing racing-games real-racing-3 vehicles

Last synced: 01 Apr 2025

https://github.com/biom8er/phymes

Parallel HYpergraph MEssaging Streams

agentic-ai data-science digital-twins generative-ai graph-algorithms rust wasm

Last synced: 30 Jul 2025

https://github.com/lebrancconvas/big-music-hit

(WIP) Using Machine Learning in Web Application for recommeding songs based on user's activities.

college-project coursework data-science machine-learning personal-project recommendation-system web-application web-development web-programming

Last synced: 03 Jan 2026

https://github.com/quantumudit/analyzing-cleanaway-services

This project focuses on scraping all the service locations across Australia and their associated attributes from "Cleanaway" website; performing necessary transformations on the scraped data and then analyzing & visualizing it using Jupyter Notebook and Power BI.

data-analysis data-science data-transformation data-visualization etl jupyter-notebook power-bi python webscraping

Last synced: 25 Jan 2026

https://github.com/madebypixel02/machine-learning-pacman

[Uc3m] The Classic ghost-eating game

data-science data-structures data-structures-and-algorithms machine-learning machine-learning-algorithms pacman-game python reinforcement-learning uc3m videogame weka weka-library

Last synced: 11 Apr 2026

https://github.com/miroslav-reiter/kurz_python_jupyter

🐍 Zdrojové kódy ku krúžku/kurzu Ako sa stať programátor, dátový vedec/analytik, vývojár

anaconda analyst data-science developer game-development jupyter jupyter-notebook programmer pygame python python3 reiter

Last synced: 12 Apr 2025

https://github.com/clojure-finance/clojask-io

Reading and writing various file formats for Clojask: clojask-io is a library designed to extend the file support for Clojask. This library can also be used alone to read in and output dataset files.

clojure data-science dataframe file-format input-output

Last synced: 05 Mar 2025

https://github.com/tilebox/tilebox-go

Tilebox Go SDK

data-science distributed-computing go satellite-data space space-data space-data-pipeline space-data-science tilebox

Last synced: 16 Jan 2026

https://github.com/neelsoumya/public_open_source_data_science

A repository of open source data science projects for social good

citizen-data-science citizen-science data-analysis data-science datascience datascience-social-good datascience-socialgood deep-learning machine-learning paper python social

Last synced: 25 Apr 2025

https://github.com/s4m-mo/sam-the-programmer

My profile README.

data-science machine-learning neuron-ai password-classified python readme readme-profile

Last synced: 01 Aug 2025

https://github.com/dayyass/kaggle

My solutions for different Kaggle Competitions.

bert data-science deep-learning kaggle machine-learning metric-learning natural-language-processing nlp siamese-network transformer

Last synced: 02 Mar 2026

https://github.com/dr-saad-la/codelabs

This repository contains a collection of interactive tutorials and hands-on coding exercises designed to help you learn and master various programming concepts and technologies. Each codelab provides step-by-step instructions, practical examples, and challenges to enhance your coding skills.

bigdata computing computingscience data-engineering data-science datascience programming tools

Last synced: 20 Feb 2026

https://github.com/anze-/comfyui_deepdeband

ComyUI wrapper for RaymondLZhou/deepDeband image and video debanding

comfyui-nodes data-refinement data-science debanding image-debanding image-processing video-processing

Last synced: 20 Feb 2026

https://github.com/digitranslab/dblock

🔥 🔥 🔥 dblock - Agentic Data Workflow Orchestrator

ai ai-agents ai-workflows data-science llm workflow

Last synced: 11 Mar 2026

https://github.com/faisal-fida/faisal-fida

Short description about me. Feel free to reach out to me via LinkedIn: https://www.linkedin.com/in/faisal-fida/ or Medium: https://medium.com/@faisal-fida

computer-vision data-science javascript machine-learning python

Last synced: 25 Apr 2025

https://github.com/miraisolutions/mirailabs

A series of data science workshops aimed at professionals

data-science software-engineering workshop

Last synced: 04 Sep 2025

https://github.com/mariona-ft/data-mining-mida

MINERIA DE DADES Curs 2023-24 EPSEVG

data-mining data-science data-visualization datascience epsevg ipython-notebook prediccion-de-datos prediction prediction-model predictive-modeling universitat-politecnica-catalunya university-project upc

Last synced: 20 Jan 2026

https://github.com/nafisalawalidris/spacex-falcon-9-first-stage-landing-prediction

The project revolves around predicting the successful landing of the Falcon 9 first stage during SpaceX rocket launches. By leveraging the concepts and techniques learned in the specialization, we aim to develop a predictive model that can determine the likelihood of a successful landing.

cost-estimation data-science exploratory-data-analysis interactive-visualizations modelling predictive-analytics predictive-modeling python wrangling-data

Last synced: 19 Apr 2025

https://github.com/krishnaura45/potatolife

An API based Potato Disease Classification Project

api data-science deep-learning images plants

Last synced: 30 Mar 2025

https://github.com/quantumudit/analyzing-suez-services

This project focuses on scraping all the service locations across Australia & New Zealand and their associated attributes from "Suez" website; performing necessary transformations on the scraped data and then analyzing & visualizing it using Jupyter Notebook and Power BI.

data-analysis data-science data-transformation data-visualization etl jupyter-notebook power-bi python webscraping