✨ Add source examples for Python 3.10 and 3.9 with updated syntax (#842)

Co-authored-by: Esteban Maya Cadavid <emayacadavid9@gmail.com>

docs/tutorial/relationship-attributes/define-relationships-attributes.md

@@ -41,18 +41,44 @@ Now that you know how these tables work underneath and how the model classes rep
 
 Up to now, we have only used the `team_id` column to connect the tables when querying with `select()`:
 
+//// tab | Python 3.10+
+
+```Python hl_lines="16"
+{!./docs_src/tutorial/connect/insert/tutorial001_py310.py[ln:1-16]!}
+
+# Code below omitted 👇
+```
+
+////
+
+//// tab | Python 3.7+
+
 ```Python hl_lines="18"
 {!./docs_src/tutorial/connect/insert/tutorial001.py[ln:1-18]!}
 
 # Code below omitted 👇
 ```
 
+////
+
 /// details | 👀 Full file preview
 
+//// tab | Python 3.10+
+
+```Python
+{!./docs_src/tutorial/connect/insert/tutorial001_py310.py!}
+```
+
+////
+
+//// tab | Python 3.7+
+
 ```Python
 {!./docs_src/tutorial/connect/insert/tutorial001.py!}
 ```
 
+////
+
 ///
 
 This is a **plain field** like all the others, all representing a **column in the table**.
@@ -61,34 +87,122 @@ But now let's add a couple of new special attributes to these model classes, let
 
 First, import `Relationship` from `sqlmodel`:
 
+//// tab | Python 3.10+
+
+```Python hl_lines="1"
+{!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001_py310.py[ln:1]!}
+
+# Code below omitted 👇
+```
+
+////
+
+//// tab | Python 3.9+
+
+```Python hl_lines="3"
+{!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001_py39.py[ln:1-3]!}
+
+# Code below omitted 👇
+```
+
+////
+
+//// tab | Python 3.7+
+
 ```Python hl_lines="3"
 {!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001.py[ln:1-3]!}
 
 # Code below omitted 👇
 ```
 
+////
+
 /// details | 👀 Full file preview
 
+//// tab | Python 3.10+
+
+```Python
+{!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001_py310.py!}
+```
+
+////
+
+//// tab | Python 3.9+
+
+```Python
+{!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001_py39.py!}
+```
+
+////
+
+//// tab | Python 3.7+
+
 ```Python
 {!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001.py!}
 ```
 
+////
+
 ///
 
 Next, use that `Relationship` to declare a new attribute in the model classes:
 
+//// tab | Python 3.10+
+
+```Python hl_lines="9  19"
+{!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001_py310.py[ln:1-19]!}
+
+# Code below omitted 👇
+```
+
+////
+
+//// tab | Python 3.9+
+
+```Python hl_lines="11  21"
+{!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001_py39.py[ln:1-21]!}
+
+# Code below omitted 👇
+```
+
+////
+
+//// tab | Python 3.7+
+
 ```Python hl_lines="11  21"
 {!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001.py[ln:1-21]!}
 
 # Code below omitted 👇
 ```
 
+////
+
 /// details | 👀 Full file preview
 
+//// tab | Python 3.10+
+
+```Python
+{!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001_py310.py!}
+```
+
+////
+
+//// tab | Python 3.9+
+
+```Python
+{!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001_py39.py!}
+```
+
+////
+
+//// tab | Python 3.7+
+
 ```Python
 {!./docs_src/tutorial/relationship_attributes/define_relationship_attributes/tutorial001.py!}
 ```
 
+////
+
 ///
 
 ## What Are These Relationship Attributes