📝 Add source examples for Python 3.9 and 3.10 (#715)

* 📝 Add source examples for Python 3.9 and 3.10

* ✅ Add tests for new source examples for Python 3.9 and 3.10, still needs pytest markers

* ✅ Add tests for fastapi examples

* ✅ Update tests for FastAPI app testing, for Python 3.9 and 3.10, fixing multi-app testing conflicts

* ✅ Require Python 3.9 and 3.10 for tests

* ✅ Update tests with missing markers

tests/test_tutorial/test_create_db_and_table/test_tutorial001_py310.py

@@ -0,0 +1,19 @@
+from pathlib import Path
+
+from ...conftest import coverage_run, needs_py310
+
+
+@needs_py310
+def test_create_db_and_table(cov_tmp_path: Path):
+    module = "docs_src.tutorial.create_db_and_table.tutorial001_py310"
+    result = coverage_run(module=module, cwd=cov_tmp_path)
+    assert "BEGIN" in result.stdout
+    assert 'PRAGMA main.table_info("hero")' in result.stdout
+    assert "CREATE TABLE hero (" in result.stdout
+    assert "id INTEGER NOT NULL," in result.stdout
+    assert "name VARCHAR NOT NULL," in result.stdout
+    assert "secret_name VARCHAR NOT NULL," in result.stdout
+    assert "age INTEGER," in result.stdout
+    assert "PRIMARY KEY (id)" in result.stdout
+    assert ")" in result.stdout
+    assert "COMMIT" in result.stdout

tests/test_tutorial/test_create_db_and_table/test_tutorial002_py310.py

@@ -0,0 +1,16 @@
+from sqlalchemy import inspect
+from sqlalchemy.engine.reflection import Inspector
+from sqlmodel import create_engine
+
+from ...conftest import needs_py310
+
+
+@needs_py310
+def test_create_db_and_table(clear_sqlmodel):
+    from docs_src.tutorial.create_db_and_table import tutorial002_py310 as mod
+
+    mod.sqlite_url = "sqlite://"
+    mod.engine = create_engine(mod.sqlite_url)
+    mod.create_db_and_tables()
+    insp: Inspector = inspect(mod.engine)
+    assert insp.has_table(str(mod.Hero.__tablename__))

tests/test_tutorial/test_create_db_and_table/test_tutorial003_py310.py

@@ -0,0 +1,16 @@
+from sqlalchemy import inspect
+from sqlalchemy.engine.reflection import Inspector
+from sqlmodel import create_engine
+
+from ...conftest import needs_py310
+
+
+@needs_py310
+def test_create_db_and_table(clear_sqlmodel):
+    from docs_src.tutorial.create_db_and_table import tutorial003_py310 as mod
+
+    mod.sqlite_url = "sqlite://"
+    mod.engine = create_engine(mod.sqlite_url)
+    mod.create_db_and_tables()
+    insp: Inspector = inspect(mod.engine)
+    assert insp.has_table(str(mod.Hero.__tablename__))