added get_db_connection in config

skais/utils/config.py

@@ -8,6 +8,8 @@ import os
 from pathlib import Path
 from configparser import ConfigParser
 
+import psycopg2
+
 
 def get_config_file():
     """
@@ -58,6 +60,7 @@ def get_data_path():
                         .format(data_path, config_file))
     return data_path
 
+
 def get_db_config():
     """
     Read db config from user configuration file.
@@ -83,3 +86,13 @@ def get_db_config():
         raise Exception('Invalid data path: {}. Update configuration file {}'
                         .format(dict, config_file))
     return dict
+
+
+def get_db_connection():
+    db_config = get_db_config()
+    connection = psycopg2.connect(user=db_config['user'],
+                                  password=db_config['password'],
+                                  host=db_config['host'],
+                                  port=db_config['port'],
+                                  database=db_config['database'])
+    return connection