chore: Deprecate Python 3.7 and add support for Python 3.10

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
 

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",
     ],