only create file if it doesn't exist yet

db/init_db.py

@@ -1,10 +1,16 @@
+import os
 import sqlite3
 import sys
 
 # Usage: python init_db.py <db_path>
 # loads in default tables and future schema changes into the database
 db_path = sys.argv[1]
 
+# check if the database exists as a file
+if os.path.isfile(db_path):
+    print(f"database {db_path} already exists")
+    sys.exit(0)
+
 try:
     conn = sqlite3.connect(db_path)
     c = conn.cursor()
@@ -16,4 +22,4 @@
     print(e)
     sys.exit(1)
 
-print(f"Database initialized successfully to {db_path}")
+print(f"database initialized successfully to {db_path}")