Fixed how the connection was returned

src/hello_postgres/__main__.py

@@ -4,11 +4,11 @@ import dotenv
 import os
 
 def main():
-    cursor = connect()
+    cursor = connect().cursor()
+    # cursor.execute("SELECT * FROM DB_table WHERE id = 1")
 
 
 def connect():
-    global conn
     dotenv.load_dotenv()
     conn = psycopg2.connect(
         database=os.getenv('POSTGRES_DB'),
@@ -17,5 +17,6 @@ def connect():
         user=os.getenv('POSTGRES_USER'),
         password=os.getenv('POSTGRES_PASSWORD')
     )
+    return conn
 
 main()