Add Python version guard to entry point

Check that the Python interpreter is version 3.10 before proceeding
with deployment. This prevents cryptic container errors from
incompatible .pyc files when running on newer Python versions.

Closes #41

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: szachovy

CHANGELOG.md

@@ -26,6 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * Fixed `run_mysql_server()` not instantiating `MySQLServer` class. (#94)
 * Disabled MD060 markdownlint rule to fix table column style false positives in documentation. (#94)
+* Added Python version guard to entry point for early failure on incompatible versions. (#41)
 
 ## 1.0 - 2024-10-13
 

superset-cluster

@@ -71,14 +71,26 @@ parse_arguments() {
 
 parse_arguments "$@"
 
+check_python_version() {
+    local python_cmd="$1"
+    local version
+    version=$($python_cmd -c 'import sys; print(f"{sys.version_info.major}.{sys.version_info.minor}")')
+    if [ "$version" != "3.10" ]; then
+        echo "Error: Python 3.10 required (found $version)" >&2
+        exit 1
+    fi
+}
+
 if python --version &>/dev/null; then
+  check_python_version python
   eval "python ./src/initialize.py \
     '${virtual_ip_address}' \
     '${virtual_network_interface}' \
     '${virtual_network_mask}' \
     '${mgmt_nodes[*]}' \
     '${mysql_nodes[*]}'"
 elif python3 --version &>/dev/null; then
+  check_python_version python3
   eval "python3 ./src/initialize.py \
     '${virtual_ip_address}' \
     '${virtual_network_interface}' \