Adds 'list-environments'

Author: Alan Christie

README.md

@@ -46,6 +46,7 @@ You should find the following tools in this repository: -
 - `delete-all-instances`
 - `delete-old-instances`
 - `delete-test-projects`
+- `list-environments`
 - `load-er`
 - `save-er`
 

tools/list-environments.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+"""Prints the available environments.
+"""
+import sys
+from typing import List
+
+from squonk2.environment import Environment
+
+environments: List[str] = Environment.load()
+if not environments:
+    print("No environments found")
+    sys.exit(1)
+
+index: int = 1
+for environment in environments:
+    if index == 1:
+        print(f"{index}. {environment} (default)")
+        first = False
+    else:
+        print(f"{index}. {environment}")
+    index += 1