Add current set of helper files.

monitor.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+
+import hashlib
+import time
+import subprocess
+import sys
+
+
+def get_file_hash(filename):
+    hasher = hashlib.sha256()
+    with open(filename, 'rb') as f:
+        hasher.update(f.read())
+    return hasher.hexdigest()
+
+
+def main(script_name, interval=1):
+    last_hash = None
+    process = None
+
+    while True:
+        try:
+            current_hash = get_file_hash(script_name)
+            if current_hash != last_hash:
+                last_hash = current_hash
+                if process and process.poll() is None:
+                    process.terminate()
+                print(f"Detected change in {script_name}, running script...")
+                process = subprocess.Popen(['pypy3', script_name], shell=False)
+            time.sleep(interval)
+        except KeyboardInterrupt:
+            if process:
+                process.terminate()
+            break
+        except FileNotFoundError:
+            print("The file was not found. Make sure the script name is correct.")
+            break
+
+if __name__ == "__main__":
+    main(sys.argv[1])