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Hello World
@app.post("/hello")
def hello(data: dict = Body):
book = xw.Book(json=data)
book.sheets[0]["A1"].value = "Hello xlwings!"
return book.json()
function hello() {
runPython("https://myurl.com/hello", { apiKey: mytoken });
}
Backend
Frontend](https://image.slidesharecdn.com/xlwingsgooglesheets-221011131253-bd38ccf2/75/xlwings-for-Google-Sheets-14-2048.jpg)
Uploaded byxlwings
xlwings for Google Sheets
The document outlines a webinar by Felix Zumstein on building web apps using Google Sheets and Python with xlwings. It covers various topics including an introduction to xlwings, basic functionality, development, deployment, authentication, and error handling. Additionally, it provides resources such as GitHub links and pricing information for xlwings services.
xlwings for Google Sheets
- 1. How to buildweb apps with Google Sheets and Python Felix Zumstein April 21, 2022
- 2. 2 Housekeeping • Yes, thiswebinar will be recorded, and you will get an email with the replay • Use the chat for questions: I’ll try to answer them at the very end of the webinar
- 3. First things first(1/4) 3
- 4. First things first(2/4) 4
- 5. First things first(3/4) 5 Low Level Workshop High Level Overview
- 6. 6 • Free fornon-commercial use • Source available • Paid plans: https://www.xlwings.org/pricing First things first (4/4) Open Source xlwings PRO
- 7. Agenda 1. Introduction 2. TheBasics 3. GitHub Issue Dashboard 4. Authentication & Authorization 5. Development & Deployment 7
- 8.
- 9. 9 About Me (1/3) Icreated xlwings in 2014
- 10. 10 About Me (2/3) Iwrote a book in 2021
- 11. I am CEOat xltrail.com: Git for Excel 11 About Me (3/3)
- 12.
- 13. 13 xlwings is FrameworkAgnostic
- 14. 14 Hello World @app.post("/hello") def hello(data:dict = Body): book = xw.Book(json=data) book.sheets[0]["A1"].value = "Hello xlwings!" return book.json() function hello() { runPython("https://myurl.com/hello", { apiKey: mytoken }); } Backend Frontend
- 15. 3. GitHub IssueDashboard
- 16.
- 17. 17 Apps Script CodeOrganization • $ xlwings copy gs • Put xlwings and runPython calls in a different module
- 18. 18 Running your Code •Apps Script Editor • Buttons • Custom Menus • Sidebar (?) - works according to docs but not for me • Add-ons for external deployment • Triggers (see next slide)
- 19. 19 Triggers • Event Source –Time-driven – From spreadsheet – From calendar • Executions Log – with error messages • Email alerts on failed executions – Immediate – Hourly/daily/weekly digests
- 20. 20 Error Handling • RaiseHTTPException or use an own error class in connection with exception_handler • This will propagate the error to Google Sheets:
- 21. 21 Quotas For Workspace accounts(consumer are lower): • Script runtime: 6 min / execution • Triggers: 20 /user /script • URL Fetch POST size: 50 MB / call • URL Fetch calls: 100,000 / day https://developers.google.com/apps-script/guides/services/quotas
- 22.
- 23.
- 24. 24 Authentication • Easily lockdown your backend to users of your Google Workspace domain • Use ScriptApp.getOAuthToken() as your apiKey (OAuth2 access token) • Google Apps Script does not contain any sensitive token
- 25. 25 Authorization • Use theauthorization system that works for you: – Define Groups via environment variables – Use Google Directory (i.e., Groups) that comes with Google Workspace – Okta – Azure AD – LDAP – …
- 26. 26 Security • Sensitive code,data & credentials stay on the server where they can be secured, e.g., as secrets • In case your workbook is shared with the wrong people, they can’t run any code Server • Database credentials • Client data • Business logic Short-lived access token
- 27. 4. Development &Deployment
- 28. 28 Development • Run webserver locally and expose port with a tool like ngrok • Run in a cloud-based IDE such as GitPod or GitHub Codespaces (no need for ngrok) • Git push to staging server • Maybe: Develop against local Excel installation
- 29. 29 Deployment • Runs onyour favorite cloud or under your desk • Containers are ”one honking great idea”! https://cloud.google.com/run https://render.com
- 30. 30 It’s still early… •…but sending back and forth pandas DataFrames can often solve more issues than many other add-ons together
- 31.