Azure Functions - Python Binding "name" Property Restrictions

[tkutcher]

In Azure Functions, it appears as if binding names cannot contain underscores. In python, with snake_case being a common style for variable names, it is extremely unobvious that this is a restriction (since in most programming languages an identifier would be allowed to have underscores), and the only available indication/troubleshooting is that web responses return a 404 status code. After a long session of figuring out why I was getting 404 errors, I finally came upon this stackoverflow post which confirmed my last attempt/theory.

It would definitely have been a benefit if somewhere in the docs (my linked page, or maybe as a common issue on the "troubleshooting" page here, it mentioned the regex/expectation for binding names to work properly.

Thanks

---

Document Details

⚠ Do not edit this section. It is required for learn.microsoft.com ➟ GitHub issue linking.

• ID: 7d575e82-637b-32de-e64d-75adf4b6d976
• Version Independent ID: e346a973-fcb9-0c10-c1ed-17acd806ced9
• Content: Triggers and bindings in Azure Functions
• Content Source: articles/azure-functions/functions-triggers-bindings.md
• Service: azure-functions
• GitHub Login: @ggailey777
• Microsoft Alias: glenga

[Naveenommi-MSFT]

@tkutcher Thanks for your feedback! We will investigate and update as appropriate.