From 6da446a93754f70194aff425dda4bb2595df252b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebasti=C3=A1n=20Ram=C3=ADrez?= <tiangolo@gmail.com>
Date: Wed, 11 Feb 2026 18:38:41 +0100
Subject: [PATCH] =?UTF-8?q?=F0=9F=93=9D=20Update=20docs=20references=20to?=
 =?UTF-8?q?=20Python=203.9?=
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---
 docs/en/docs/tutorial/body-multiple-params.md |  7 ------
 docs/en/docs/tutorial/body.md                 |  2 +-
 .../dependencies/classes-as-dependencies.md   | 24 +++++++++----------
 .../tutorial/dependencies/sub-dependencies.md |  4 ++--
 docs/en/docs/tutorial/extra-models.md         |  4 ++--
 .../tutorial/query-params-str-validations.md  | 24 -------------------
 6 files changed, 17 insertions(+), 48 deletions(-)

diff --git a/docs/en/docs/tutorial/body-multiple-params.md b/docs/en/docs/tutorial/body-multiple-params.md
index bb0c583685..d904fb8397 100644
--- a/docs/en/docs/tutorial/body-multiple-params.md
+++ b/docs/en/docs/tutorial/body-multiple-params.md
@@ -106,13 +106,6 @@ As, by default, singular values are interpreted as query parameters, you don't h
 q: str | None = None
 ```
 
-Or in Python 3.9:
-
-```Python
-q: Union[str, None] = None
-```
-
-
 For example:
 
 {* ../../docs_src/body_multiple_params/tutorial004_an_py310.py hl[28] *}
diff --git a/docs/en/docs/tutorial/body.md b/docs/en/docs/tutorial/body.md
index 2d0dfcbb59..fb4471836e 100644
--- a/docs/en/docs/tutorial/body.md
+++ b/docs/en/docs/tutorial/body.md
@@ -155,7 +155,7 @@ The function parameters will be recognized as follows:
 
 FastAPI will know that the value of `q` is not required because of the default value `= None`.
 
-The `str | None` (Python 3.10+) or `Union` in `Union[str, None]` (Python 3.9+) is not used by FastAPI to determine that the value is not required, it will know it's not required because it has a default value of `= None`.
+The `str | None` is not used by FastAPI to determine that the value is not required, it will know it's not required because it has a default value of `= None`.
 
 But adding the type annotations will allow your editor to give you better support and detect errors.
 
diff --git a/docs/en/docs/tutorial/dependencies/classes-as-dependencies.md b/docs/en/docs/tutorial/dependencies/classes-as-dependencies.md
index 0a6a786b50..d9a02d5b80 100644
--- a/docs/en/docs/tutorial/dependencies/classes-as-dependencies.md
+++ b/docs/en/docs/tutorial/dependencies/classes-as-dependencies.md
@@ -101,7 +101,7 @@ Now you can declare your dependency using this class.
 
 Notice how we write `CommonQueryParams` twice in the above code:
 
-//// tab | Python 3.9+
+//// tab | Python 3.10+
 
 ```Python
 commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
@@ -109,7 +109,7 @@ commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
 
 ////
 
-//// tab | Python 3.9+ non-Annotated
+//// tab | Python 3.10+ non-Annotated
 
 /// tip
 
@@ -137,7 +137,7 @@ It is from this one that FastAPI will extract the declared parameters and that i
 
 In this case, the first `CommonQueryParams`, in:
 
-//// tab | Python 3.9+
+//// tab | Python 3.10+
 
 ```Python
 commons: Annotated[CommonQueryParams, ...
@@ -145,7 +145,7 @@ commons: Annotated[CommonQueryParams, ...
 
 ////
 
-//// tab | Python 3.9+ non-Annotated
+//// tab | Python 3.10+ non-Annotated
 
 /// tip
 
@@ -163,7 +163,7 @@ commons: CommonQueryParams ...
 
 You could actually write just:
 
-//// tab | Python 3.9+
+//// tab | Python 3.10+
 
 ```Python
 commons: Annotated[Any, Depends(CommonQueryParams)]
@@ -171,7 +171,7 @@ commons: Annotated[Any, Depends(CommonQueryParams)]
 
 ////
 
-//// tab | Python 3.9+ non-Annotated
+//// tab | Python 3.10+ non-Annotated
 
 /// tip
 
@@ -197,7 +197,7 @@ But declaring the type is encouraged as that way your editor will know what will
 
 But you see that we are having some code repetition here, writing `CommonQueryParams` twice:
 
-//// tab | Python 3.9+
+//// tab | Python 3.10+
 
 ```Python
 commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
@@ -205,7 +205,7 @@ commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
 
 ////
 
-//// tab | Python 3.9+ non-Annotated
+//// tab | Python 3.10+ non-Annotated
 
 /// tip
 
@@ -225,7 +225,7 @@ For those specific cases, you can do the following:
 
 Instead of writing:
 
-//// tab | Python 3.9+
+//// tab | Python 3.10+
 
 ```Python
 commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
@@ -233,7 +233,7 @@ commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
 
 ////
 
-//// tab | Python 3.9+ non-Annotated
+//// tab | Python 3.10+ non-Annotated
 
 /// tip
 
@@ -249,7 +249,7 @@ commons: CommonQueryParams = Depends(CommonQueryParams)
 
 ...you write:
 
-//// tab | Python 3.9+
+//// tab | Python 3.10+
 
 ```Python
 commons: Annotated[CommonQueryParams, Depends()]
@@ -257,7 +257,7 @@ commons: Annotated[CommonQueryParams, Depends()]
 
 ////
 
-//// tab | Python 3.9+ non-Annotated
+//// tab | Python 3.10+ non-Annotated
 
 /// tip
 
diff --git a/docs/en/docs/tutorial/dependencies/sub-dependencies.md b/docs/en/docs/tutorial/dependencies/sub-dependencies.md
index b9a4e3ce74..99588dd3c5 100644
--- a/docs/en/docs/tutorial/dependencies/sub-dependencies.md
+++ b/docs/en/docs/tutorial/dependencies/sub-dependencies.md
@@ -62,7 +62,7 @@ And it will save the returned value in a <dfn title="A utility/system to store c
 
 In an advanced scenario where you know you need the dependency to be called at every step (possibly multiple times) in the same request instead of using the "cached" value, you can set the parameter `use_cache=False` when using `Depends`:
 
-//// tab | Python 3.9+
+//// tab | Python 3.10+
 
 ```Python hl_lines="1"
 async def needy_dependency(fresh_value: Annotated[str, Depends(get_value, use_cache=False)]):
@@ -71,7 +71,7 @@ async def needy_dependency(fresh_value: Annotated[str, Depends(get_value, use_ca
 
 ////
 
-//// tab | Python 3.9+ non-Annotated
+//// tab | Python 3.10+ non-Annotated
 
 /// tip
 
diff --git a/docs/en/docs/tutorial/extra-models.md b/docs/en/docs/tutorial/extra-models.md
index d82df561fa..7e7fa146d0 100644
--- a/docs/en/docs/tutorial/extra-models.md
+++ b/docs/en/docs/tutorial/extra-models.md
@@ -190,7 +190,7 @@ But if we put that in the assignment `response_model=PlaneItem | CarItem` we wou
 
 The same way, you can declare responses of lists of objects.
 
-For that, use the standard Python `typing.List` (or just `list` in Python 3.9 and above):
+For that, use the standard Python `list`:
 
 {* ../../docs_src/extra_models/tutorial004_py39.py hl[18] *}
 
@@ -200,7 +200,7 @@ You can also declare a response using a plain arbitrary `dict`, declaring just t
 
 This is useful if you don't know the valid field/attribute names (that would be needed for a Pydantic model) beforehand.
 
-In this case, you can use `typing.Dict` (or just `dict` in Python 3.9 and above):
+In this case, you can use `dict`:
 
 {* ../../docs_src/extra_models/tutorial005_py39.py hl[6] *}
 
diff --git a/docs/en/docs/tutorial/query-params-str-validations.md b/docs/en/docs/tutorial/query-params-str-validations.md
index 1846ad56a9..b839602700 100644
--- a/docs/en/docs/tutorial/query-params-str-validations.md
+++ b/docs/en/docs/tutorial/query-params-str-validations.md
@@ -47,40 +47,16 @@ Now it's the time to use it with FastAPI. 🚀
 
 We had this type annotation:
 
-//// tab | Python 3.10+
-
 ```Python
 q: str | None = None
 ```
 
-////
-
-//// tab | Python 3.9+
-
-```Python
-q: Union[str, None] = None
-```
-
-////
-
 What we will do is wrap that with `Annotated`, so it becomes:
 
-//// tab | Python 3.10+
-
 ```Python
 q: Annotated[str | None] = None
 ```
 
-////
-
-//// tab | Python 3.9+
-
-```Python
-q: Annotated[Union[str, None]] = None
-```
-
-////
-
 Both of those versions mean the same thing, `q` is a parameter that can be a `str` or `None`, and by default, it is `None`.
 
 Now let's jump to the fun stuff. 🎉