[03.02.20] Initial Commit and Postgres Database connection

.gitignore

@@ -127,3 +127,6 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+# configuration files
+*.ini

src/main.py

@@ -0,0 +1,6 @@
+#!/usr/bin/env python
+
+from utils.databaseConnect import connect
+
+if __name__=='__main__':
+    connect()

src/utils/databaseConfig.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+
+from configparser import ConfigParser
+
+def config(filename='configuration/database.ini', section='postgresql'):
+    parser = ConfigParser()
+    parser.read(filename)
+
+    db = {}
+    if parser.has_section(section):
+        params = parser.items(section)
+        for param in params:
+            db[param[0]] = param[1]
+    else:
+        raise Exception('Section {0} not found in the {1} file'.format(section, filename))
+
+    return db

src/utils/databaseConnect.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+
+import psycopg2
+from utils.databaseConfig import config
+
+def connect():
+    """ Connect to the PostgreSQL database server """
+    conn = None
+    try:
+        # read connection parameters
+        params = config()
+
+        # connect to the PostgreSQL server
+        print('Connecting to the PostgreSQL database...')
+        conn = psycopg2.connect(**params)
+
+        # create a cursor
+        cur = conn.cursor()
+
+        # execute a statement
+        print('PostgreSQL database version:')
+        cur.execute('SELECT version()')
+
+        # display the PostgreSQL database server version
+        db_version = cur.fetchone()
+        print(db_version)
+
+        # close the communication with the PostgreSQL
+        cur.close()
+    except (Exception, psycopg2.DatabaseError) as error:
+        print(error)
+    finally:
+        if conn is not None:
+            conn.close()
+            print('Database connection closed.')