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added grid layout

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Will McGugan
2022-09-06 16:06:01 +01:00
parent d9d5791925
commit e4c16b6d6d
2 changed files with 10 additions and 5 deletions
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docs/guide/app.md
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@@ -129,7 +129,7 @@ Running this app will give you the following:
Clicking either of those buttons will exit the app, and the `run()` method will return either `"yes"` or `"no"` depending on button clicked.
#### Typing
#### Return type
You may have noticed that we subclassed `App[str]` rather than the usual `App`.
@@ -137,7 +137,9 @@ You may have noticed that we subclassed `App[str]` rather than the usual `App`.
--8<-- "docs/examples/app/question01.py"
```
The addition of `[str]` tells Mypy that `run()` is expected to return a string. It may also return `None` if `sys.exit()` is called without a return value, so the return type of `run` will be `str | None`.
The addition of `[str]` tells Mypy that `run()` is expected to return a string. It may also return `None` if [App.exit()][textual.app.App.exit] is called without a return value, so the return type of `run` will be `str | None`.
You can change the type to match the values you intend to pass to App.exit()][textual.app.App.exit].
!!! note