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Update conditional_rendering.md#1772

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chicago4kbike wants to merge 1 commit intoreflex-dev:mainfrom
chicago4kbike:patch-3
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Update conditional_rendering.md#1772
chicago4kbike wants to merge 1 commit intoreflex-dev:mainfrom
chicago4kbike:patch-3

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list[str] is preferred for cleaner code for modern python (3.9+) instead of importing List and use List[str]

list[str] is preferred for cleaner code for modern python (3.9+) instead of importing List and use List[str]
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greptile-apps bot commented Mar 10, 2026

Greptile Summary

This PR updates the conditional_rendering.md documentation to modernize the Python type hint in the rx.match code example, replacing from typing import List / List[str] with the built-in list[str] syntax available since Python 3.9. The change is correct and aligns with the broader Python ecosystem move away from typing imports for standard collection types.

  • Good change: Using list[str] instead of List[str] is the preferred style for Python 3.9+ and reduces an unnecessary import.
  • Minor cleanup needed: The removed from typing import List line was replaced with an empty line rather than simply deleted, resulting in two consecutive blank lines at the top of the code block.

Confidence Score: 5/5

  • This is a safe, documentation-only change with no impact on runtime behavior.
  • The change is limited to a single markdown file and replaces an outdated typing.List import with the modern built-in list type hint. There is no logic, no API surface, and no production code affected. The only minor issue is a cosmetic extra blank line.
  • No files require special attention.

Important Files Changed

Filename Overview
docs/components/conditional_rendering.md Replaces from typing import List + List[str] with the modern built-in list[str] (Python 3.9+); leaves an extra leading blank line in the code block.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[MatchState.cat_breed] --> B{rx.match}
    B -->|"persian"| C[rx.text: Persian cat selected.]
    B -->|"siamese"| D[rx.text: Siamese cat selected.]
    B -->|"maine coon"| E[rx.text: Maine Coon cat selected.]
    B -->|"ragdoll"| F[rx.text: Ragdoll cat selected.]
    B -->|default| G[rx.text: Unknown cat breed selected.]
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Last reviewed commit: 69b3ca9

Comment on lines 81 to 84
```python demo exec
from typing import List


import reflex as rx
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Extra blank line at top of code block

Removing from typing import List is the right call, but replacing it with an empty line leaves two consecutive blank lines at the start of the code block (the replacement blank line plus the separator blank line that was already there). The cleaner fix is to drop the line entirely rather than substituting it with whitespace.

Suggested change
```python demo exec
from typing import List
import reflex as rx
```python demo exec
import reflex as rx

Note: If this suggestion doesn't match your team's coding style, reply to this and let me know. I'll remember it for next time!

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