chore: Deprecate Python 3.7 (apache#19017)

* chore: Deprecate Python 3.7 and add support for Python 3.10

* Update local-backend.mdx

* Update UPDATING.md

Co-authored-by: John Bodley <john.bodley@airbnb.com>

Makefile

@@ -15,8 +15,8 @@
 # limitations under the License.
 #
 
-# Python version installed; we need 3.7-3.9
-PYTHON=`command -v python3.9 || command -v python3.8 || command -v python3.7`
+# Python version installed; we need 3.8-3.9
+PYTHON=`command -v python3.9 || command -v python3.8`
 
 .PHONY: install superset venv pre-commit
 
@@ -70,7 +70,7 @@ update-js:
 
 venv:
 	# Create a virtual environment and activate it (recommended)
-	if ! [ -x "${PYTHON}" ]; then echo "You need Python 3.7, 3.8 or 3.9 installed"; exit 1; fi
+	if ! [ -x "${PYTHON}" ]; then echo "You need Python 3.8 or 3.9 installed"; exit 1; fi
 	test -d venv || ${PYTHON} -m venv venv # setup a python3 virtualenv
 	. venv/bin/activate
 

UPDATING.md

@@ -36,6 +36,7 @@ assists people when migrating to a new version.
 - [17539](https://github.com/apache/superset/pull/17539): all Superset CLI commands (init, load_examples and etc) require setting the FLASK_APP environment variable (which is set by default when `.flaskenv` is loaded)
 - [18970](https://github.com/apache/superset/pull/18970): Changes feature
 flag for the legacy datasource editor (DISABLE_LEGACY_DATASOURCE_EDITOR) in config.py to True, thus disabling the feature from being shown in the client.
+- [19017](https://github.com/apache/superset/pull/19017): Removes Python 3.7 support.
 
 ### Potential Downtime
 

docs/docs/contributing/local-backend.mdx

@@ -12,7 +12,7 @@ version: 1
 Make sure your machine meets the [OS dependencies](https://superset.apache.org/docs/installation/installing-superset-from-scratch#os-dependencies) before following these steps.
 You also need to install MySQL or [MariaDB](https://mariadb.com/downloads).
 
-Ensure that you are using Python version 3.7 or 3.8, then proceed with:
+Ensure that you are using Python version 3.8 or 3.9, then proceed with:
 
 ````bash
 # Create a virtual environment and activate it (recommended)

setup.py

@@ -167,13 +167,12 @@ def get_git_sha() -> str:
         "vertica": ["sqlalchemy-vertica-python>=0.5.9, < 0.6"],
         "netezza": ["nzalchemy>=11.0.2"],
     },
-    python_requires="~=3.7",
+    python_requires="~=3.8",
     author="Apache Software Foundation",
     author_email="dev@superset.apache.org",
     url="https://superset.apache.org/",
     download_url="https://www.apache.org/dist/superset/" + version_string,
     classifiers=[
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
     ],