Open Source Python

**We're back at Salisbury House for our summer London Airflow Meetup! Join fellow members of the data engineering community for an evening of engaging talks, great food and drinks, and exclusive swag!** **PRESENTATIONS** ***Talk #1: The Orchestration Layer: A Blueprint for Scaling Dynamic DAGs with Integrated Data Quality Gates*** * **Speaker**: [Vasudev Maduri](https://www.linkedin.com/in/vasudevmaduri/), Staff Data Engineer, Admiral Group Plc Ensuring high-quality data, accuracy, completeness, and schema validity is essential for building data trust. However, scaling data quality checks across diverse datasets often leads to duplicated boilerplate Python code, human error, and a massive bottleneck for Data Engineering teams. In this talk, we’ll explore how to shift data quality from a backlog of tech debt into an automated, self-serve developer experience directly tied to Airflow. We will demonstrate how to build a multi-faceted data observability framework that empowers end-user teams to define their own DQ rules without writing any Python code. By hiding complex Airflow code, users simply select their parameters—YAML configurations that instantly translate into fully dynamic, end-to-end DAGs, including in-flight data quality gates. The core of this session focuses on the technical implementation of integrated DQ checks that live directly *inside* the generated pipelines. You’ll learn how this metadata-driven approach enables a "shift-left" strategy for data observability, automatically enforcing data contracts and routing alerts without manual engineering intervention. ***Talk #2: Self-healing Data Pipelines in Airflow*** * **Speaker**: [Nilesh Khandalkar](https://www.linkedin.com/in/nileshskhandalkar/), Senior Manager, Capgemini Modern data pipelines remain largely reactive—failures trigger alerts, manual retries, and ongoing operational overhead for engineering teams. As systems scale, this approach introduces fragility, delays, and growing complexity in maintaining reliable workflows. This session explores how to design self-healing data pipelines in Airflow using practical patterns such as intelligent retries, conditional branching, and targeted recovery mechanisms. Real-world failure scenarios are used to illustrate how pipelines can detect issues, trigger remediation steps, and resume execution without full restarts or human intervention. The session also looks ahead to how AI-assisted anomaly detection can further enhance these systems by identifying unexpected patterns and enabling more proactive, resilient data workflows. ***Talk #3: What We Got Right (and Wrong) Building a 50-Source Data Platform on Airflow*** * **Speaker**: [Arnaud Caldow](https://www.linkedin.com/in/arnaud-caldow-384423142/), Senior Data Engineer at Collibra Collibra helps enterprises govern their data, but how does Collibra's own data team manage the data that powers the business? The answer is an Airflow-based platform that stitches together dlt, dbt, Kubernetes and Collibra's own product for governance -- all orchestrated through 87 DAGs serving 12 business domains. This talk traces a data point's journey through the stack: from API extraction via dlt pipelines running inside KubernetesPodOperator pods, through a layered dbt architecture where platform engineers standardize data and analysts build business models on top, into analytics outputs that serve multiple business teams, and finally back into Collibra Data Governance via reverse-ETL integration DAGs. Along the way, I'll share the patterns that emerged from operating this at scale: how we evolved from one-off custom pipelines to a reproducible framework that's documented well enough for AI subagents (or a new hire) to generate models from scratch, how our own Pod Operators let us test feature branches on shared environments, and how we're leveraging that same mechanism to migrate from Redshift to BigQuery (and from Airflow 2 to Airflow 3) without downtime. Behind the scenes, a 1Password-backed pipeline diffs credential hashes nightly, catching rotations before they break a DAG. **AGENDA** * **5:30-6 PM:** Arrivals, networking, food & drinks * **6-7:45PM:** Presentations * **7:45-8PM:** Networking

**NOTE: PLEASE READ THE DESCRIPTION BELOW FOR REGISTRATION:** **OWASP AI Security Summit** is taking place at **Infosecurity Europe 2026** on **Thursday, 4 June 2026 at ExCeL London** **Location inside Excel:** South Gallery Rooms 18 & 19 This summit brings together security leaders, researchers, and enterprise practitioners to discuss the latest developments in GenAI and Agentic AI security — including emerging threats, governance, incident response, real-world implementation lessons, and the evolving OWASP guidance shaping the industry. Sample sessions include: • The State of GenAI: Key Trends and OWASP GenAI Security Project • Beyond the Top 10: The Next Chapter of the Agentic Security Initiative • Agentic Security at Microsoft: Strategy, Implementation, and Lessons Learned • Implementing the Agentic Top 10 at AWS • 22 Seconds to Contain: Rewriting IR for Agents • Top 10 for LLMs Update • No Room for Hype: Securing Agentic AI Inside a UK Bank Featured speakers and contributors include OWASP GenAI Security initiative leaders and experts from: Microsoft, AWS, Lloyds Banking Group, OWASP, Deep Cyber, Zenity, and more. **Location inside Excel:** South Gallery Rooms 18 & 19 **REGISTER TO ATTEND HERE** **Register for Infosecurity Europe to attend the summit -** use promo code **OWASP** for a free pass: [https://www.infosecurityeurope.com/en-gb/visit/owasp-gen-ai-security-summit.html](https://www.infosecurityeurope.com/en-gb/visit/owasp-gen-ai-security-summit.html)

Great Opportunities abound when there is a lot of uncertainty or negative sentiment. That time is now! Prepare your plan or start taking focused action now while you can. If you haven't written out a plan yet for 2026, what are you waiting for. Lets get one together for you. Scott's book can help get you started or we can discuss at the meetup. https://www.amazon.co.uk/Achieve-Anything-SIMPLE-Uncomfortable-UNSTOPPABLE/dp/1839758260/ref=tmm_hrd_swatch_0 or borrow it from the Richmond library network: https://richmond.spydus.co.uk/cgi-bin/spydus.exe/FULL/WPAC/ALLENQ/175840303/147362136,1 Best wishes! Scott and Roxane This meetup is a great place to chat with like minded people about property investing e.g. the various strategies available, ideas on how to raise finance, cashflow vs capital gains, calculating and comparing ROIs, regional pro's & cons, and the various tools and resources people are using to up their property game. This property meetup is open to everyone – from the greenest newbies to the grizzliest tycoons! This is a traditional networking event. There are no sales pitches or “upsells” – it’s just a relaxed and informal get-together of likeminded people!!This meetup is a great place to chat with like minded people about property investing e.g. the various strategies available, ideas on how to raise finance, cashflow vs capital gains, calculating and comparing ROIs, regional pro's & cons, and the various tools and resources people are using to up their property game. This property meetup is open to everyone – from the greenest newbies to the grizzliest tycoons! This is a traditional networking event. There are no sales pitches or “upsells” – it’s just a relaxed and informal get-together of likeminded people!!

**Fabric Data Warehouse with Tino Tereshko** For our June meetup, we’re excited to welcome Tino Tereshko, Partner Director of Product at Microsoft, responsible for Fabric Data Warehouse. Having previously spent several years at Google working on BigQuery, Tino later co-founded MotherDuck — the DuckDB-based SaaS analytics platform — before joining Microsoft to lead Fabric Data Warehouse. It’s fair to say Tino knows a thing or two about modern analytical databases. Tino is visiting from Seattle and has kindly offered his time to present at our London user group. The session will include an introduction to Fabric Data Warehouse, an overview of recent developments and future direction, followed by an open “Ask Me Anything” discussion where attendees can quiz Tino on all things data warehousing, Fabric, and analytics. **Agenda** 18:30 - Welcome, drinks, pizza & networking 19:00 - Main Session 20:30 - Close **Venue** Tenth Revolution offices in London. Aldgate House, 33 Aldgate High St, London EC3N 1DL Please provide your first and last name when registering for the event, as this is provided to building security to allow you entrance into the venue.

Description: Join us for an enlightening lecture that delves into the intricate web of the past and its potential to cast a long shadow over our present lives. In this thought-provoking session, we will explore the profound ways in which the past can negatively impact our well-being, choices, and personal growth. Throughout history, human lives have been shaped by a multitude of experiences, both positive and negative. These experiences accumulate, leaving imprints on our memories and shaping our beliefs, attitudes, and behaviors. While the past holds valuable lessons and cherished memories, it can also harbor unresolved conflicts, traumas, and limitations that subtly influence our present reality. During this lecture, we will navigate the labyrinth of psychological and emotional baggage that may accumulate over time, inhibiting our personal development and impeding our ability to lead fulfilling lives. By examining the effects of the past on various aspects of our existence, we will gain a deeper understanding of how it can manifest in detrimental ways. Through engaging discussions, case studies, and real-life examples, we will explore the following topics: 1. The Power of Unresolved Trauma: We will delve into the profound impact of unresolved traumatic experiences and how they can subtly shape our thoughts, emotions, and behaviors. By shedding light on the intricate mechanisms behind these effects, we can begin to dismantle their hold on our lives. 2. Inherited Baggage: Examining the intergenerational transmission of pain, beliefs, and patterns of behavior, we will explore how our ancestors' experiences can unconsciously influence our lives. By recognizing and addressing this inherited baggage, we can break free from destructive cycles and chart our own path. 3. Limiting Beliefs and Self-Sabotage: Uncovering the deeply ingrained beliefs and narratives that stem from past experiences, we will explore how they can become self-fulfilling prophecies, stifling our potential and sabotaging our aspirations. By challenging these beliefs, we can reclaim our personal power and reshape our narratives. 4. Breaking Free: Strategies for Healing and Transformation: This segment will offer practical tools and techniques for healing past wounds, releasing emotional burdens, and cultivating resilience. We will explore approaches such as therapy, mindfulness, self-reflection, and forgiveness to facilitate the process of letting go and embracing personal growth. By the end of this lecture, attendees will gain a deeper understanding of the profound influence the past can exert on their lives and how to break free from its negative impact. Armed with newfound knowledge and practical insights, they will be empowered to embark on a transformative journey towards self-discovery, healing, and the creation of a brighter future. Note: This lecture is open to all individuals seeking personal growth and a deeper understanding of the psychological and emotional factors that shape their lives. No prior knowledge or experience is required, only an open mind and a willingness to explore the depths of the past.

Dear Poetry enthusiasts, Newham Poetry Group focuses on amplifying marginalised voices, supporting young locals, LGBTQ+ individuals, migrants and people from the global majority. We know poetry has the potential to change not only individuals' lives but also communities. **Full programme** available at [www.newhampoetrygroup.com](http://www.newhampoetrygroup.com/). We have a maximum capacity of 20 participants per session, so book early to secure your spot. **Event details** Location: The Gate Library, 6-8 Woodgrange Road, E7 0QH Date: Every Thursday Time: 6:15 pm - 7:45 pm Our sessions are free of charge. However, we welcome donations. Light refreshments are provided. We look forward to welcoming you to our poetry sessions and creating meaningful experiences together.

**Join our Free Hatha Yoga classes in the beautiful ambience of our London Centre!** **Mats are provided**. As a **registered charity**, we are dedicated to teaching authentic spirituality and to bringing the principles of **yoga** and **tantra** to as many people as possible who are open to receive it. Yoga has so many amazing benefits, and we believe everyone should have access to them. In our free drop-in yoga classes, you will discover that yoga is much more than just a physical practice. Amongst many things, yoga can help you to: * Harmonise your body * Focus your mind * Feel more energised * Feel more fulfilled * Open your heart * And… help you to **go deeper into yourself** More info here [https://tarayogacentre.co.uk/free-hatha-yoga-2/](https://tarayogacentre.co.uk/free-hatha-yoga-2/)

Come and join us for our second ever Scottish reels on the Common — to get us moving & spinning (it's a proper work out!), to have a laugh, to get us off our tech and to connect. Come rain or shine. Just bring a bottle of water as it gets hot! No experience needed whatsoever, B will call the dances. Just turn up. And yes — we may attempt a reel to Uptown Funk. Bringing Scottish dancing firmly into the 21st century. Open to singles, students, marrieds, families, seniors, anyone who is a biped very welcome.

PyData London 2026 brings together data scientists, engineers, and researchers from around the world for three days of insightful talks, tutorials, and community connection. Hosted in one of Europe’s leading tech hubs, the event highlights the latest developments in Python, machine learning, and data science. Attendees can expect a mix of cutting-edge research, real-world applications, and opportunities to network with industry leaders. Whether you're a beginner or an expert, PyData London offers something for every level of the data science community. **THIS IS NOT A TICKET- TICKETS MUST BE PURCHASED ON CONFERENCE WEBSITE.** https://pydata.org/london2026

We're very excited to be teaming up with **[Enlight Insight](https://enlightinsighttheatre.wordpress.com)** \- a queer theatre company \- to host a very special one\-off Queer Open Mic at the Saatchi Gallery on Saturday 6th June from 4\-6pm\. Enlight Insight are curating and hosting an exhibition called WE EXIST which brings together past and present to affirm a simple truth, queer people exist, have existed, and always will exist. As part of the exhibition, Josh will be hosting an open mic on the Saturday afternoon from 4-6pm. More details (including line up of fabulous performers) coming shortly... Further information and (free) tickets available [here](https://www.eventbrite.com/e/we-exist-have-existed-and-always-will-exist-exhibition-tickets-1989384593873?aff=oddtdtcreator).

The 5Rhythms® is a simple movement meditation practice designed to release the dancer that lives in everybody, no matter what shape, size, age, limitation and experience. The 5Rhythms® are Flow, Staccato, Chaos, Lyrical and Stillness. They come together to create a Wave, a movement meditation practice. There are no steps to follow. Bring your friends, your heart, willingness to move and bottle of water. Cash / card / PayPall/ bank transfer at the door or pre register: info@5rhythmswithkat.com >  £20 regular / £22 abundance for those in position to support our community / £16 concession for unemployed www.5Rhythms.com (http://www.5rhythms.com/classes/BareSoulsRhythmsclass-136) we are on Facebook (https://www.facebook.com/groups/BareSouls.5Rhythsm.withKat/) http://photos4.meetupstatic.com/photos/event/c/d/d/600_437763293.jpeg

# 📣 Paid event 👉 call for booking *** ## 👉 Standard Ticket: £549 💷 ## 👉 Early Bird: £499 💷 ## **👉 WhatsApp: +44 (0) 7470914266** ⚡ *No coding? No problem. Just bring your idea.* *⚡ From Idea to Production — Build Real Apps with AI as Your Senior Developer — In 4 Weekends* ## **🏗️ Workshop Format** * 📅 Duration: **4 Weeks (Weekends)** * ⏰ Time: **13:30 – 17:00** * 🧑‍🏫 Format: **Instructor-led + Hands-on** * 👥 Style: **Build together in class** * 💻 Outcome: **1 fully working production-ready app** # **🗺️ 4-WEEK LEARNING JOURNEY** *** ## **🟢 WEEK 1 — *“From Zero to First App”*** ### **🎯 Theme: *Understand React + Think Like a Builder*** **Slogan:** 👉 *“You don’t need to know everything to start building.”* ### Topics: * What is React (in simple terms) * Components & JSX * Props & State (core mindset) * React project setup (Vite) * Folder structure (real-world style) ### Vibe Coding: * Prompting AI to: * Generate components * Explain code * Fix errors ### Hands-on: ✅ Build your first UI (dashboard layout) ✅ Create reusable components *** ## 🟡 WEEK 2 — *“Make It Alive”* ### 🎯 Theme: *State, Events, Lifecycle Thinking* **Slogan:** 👉 *“Static pages don’t get jobs. Interactive apps do.”* ### Topics: * useState, useEffect (lifecycles simplified) * Event handling * Forms & inputs * Conditional rendering ### Vibe Coding: * AI as debugger: * “Why is this not updating?” * “Optimize this component” ### Hands-on: ✅ Build interactive features ✅ Form submission + validation ✅ UI logic (loading, error states) *** ## 🔵 WEEK 3 — *“Connect to the Real World”* ### 🎯 Theme: *API Integration & Real Data* **Slogan:** 👉 *“Real developers don’t hardcode data — they connect systems.”* ### Topics: * REST API basics (simple explanation) * Fetch / Axios * API structure understanding * Environment variables ### Vibe Coding: * Generate API services with AI * Debug API issues with AI prompts ### Hands-on: ✅ Connect to a real API (or your Node.js backend) ✅ Display dynamic data ✅ CRUD operations (Create, Read, Update, Delete) *** ## 🔴 WEEK 4 — *“From Project to Product”* ### 🎯 Theme: *Production, Deployment & Portfolio* **Slogan:** 👉 *“Don’t just build it. Launch it.”* ### Topics: * Code cleanup & structure * Basic performance tips * Deployment (Vercel / Netlify) * GitHub project setup ### Vibe Coding: * AI for: * Refactoring * Documentation * README generation ### Hands-on: ✅ Deploy your app live 🌍 ✅ Prepare portfolio-ready project ✅ Demo Day (presentation) ### Social Media *** ## zero2hero.net - Technology Training Center WhatsApp: +44 (0) 7470914266 E-mail: info@zero2hero.net Address: Unit 15 Castle Square, 40 Elephant Rd, London SE17 1EU 🎬 Youtube: https://www.youtube.com/c/zero2hero-meta 🐦 Twitter: https://twitter.com/zero2hero_uk 📸 Instagram for training: https://www.instagram.com/zero2hero.training 🔗 LinkedIn: https://www.linkedin.com/in/senrasim 👋 Meetup: https://www.meetup.com/zero2hero 🎟️ Eventbrite: https://zero2hero-meta.eventbrite.com

Improve your Mandarin and English while making new friends! Join [Manhattan Mandarin](ManhattanMandarin.co.uk) at the [Jackalope](https://jackalopelondon.com/) in Marylebone - appropriately situated above a Chinese restaurant, [Liu Xiao Mian](https://www.liu-xiaomian.com/). All levels welcome - these are **very casual** meetups where you're welcome to mingle until finding suitable language partners Pop down for noodles or stay outside in the lovely mews, but whatever you do, come ready to chat, make great new connections, and push your language learning forward 🤗🤗🤗 You're welcome to try our HSK Classes in Marylebone: [https://www.manhattanmandarin.co.uk/hskclasses](https://www.manhattanmandarin.co.uk/hskclasses) or our Saturday online HSK classes: [https://www.manhattanmandarin.co.uk/onlineclasses](https://www.manhattanmandarin.co.uk/onlineclasses) For more information please contact Harry@ManhattanMandarin.com, 07767260207) Since 2012, with a fantastic team of over 200 native and non-native Mandarin teachers in the US and UK, [Manhattan Mandarin](ManhattanMandarin.com) knows what makes for fun and engaging communication between English and Chinese speakers!

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

**Talk Description** If you've ever wondered why pip install numpy and conda install numpy aren't the same thing, you've bumped into one of Python packaging's oldest fault lines. Conda and PyPI evolved to solve different problems, one for compiled scientific libraries, one for pure-Python code, and the gap between them has caused headaches ever since. We'll look at why the split happened, what's fundamentally different under the hood, and how the two ecosystems are starting to come together. **Agenda:** 7:00pm - Opening announcements 7:10pm - Bridging conda and PyPI ecosystems 7:50pm - Q&A

We have moved to guild.host. Look us up there. https://guild.host/events/buckeye-cocoaheads-rcavwd

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. So please RSVP for a head count!

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

Topic to be announced. **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com