Pushing existing body of work.

writer.py

@@ -0,0 +1,62 @@
+#! env/bin/python3
+
+# import the psycopg2 database adapter for PostgreSQL
+import psycopg2
+from psycopg2.extras import Json
+import json
+import sys
+
+def connect_db(db: str,host: str,user: str,passwd: str):
+    try:
+        # declare a new PostgreSQL connection object
+        conn = psycopg2.connect(
+            dbname = db,
+            user = user,
+            host = host,
+            password = passwd,
+            # attempt to connect for 3 seconds then raise exception
+            connect_timeout = 3
+        )
+
+    except (Exception, psycopg2.Error) as err:
+#        print ("\npsycopg2 connect error:", err)
+        conn = None
+    return conn
+
+def get_db_creds(file: str):
+    with open(file) as cred_file:
+        creds = json.load(cred_file)
+    return creds
+
+def insert_data(conn, data):
+    
+    # insert a new vendor into the vendors table
+    sql = """  
+    INSERT INTO
+        air(datetime, temperature, humidity, location) 
+    VALUES
+        (%s, %s, %s, %s)
+    """
+    
+    try:
+        # open cursor on our db connection
+        cur = conn.cursor()
+
+        # execute the INSERT statement
+        data = (data["datetime"], data["temperature"], data["humidity"], data["location"])
+        cur.execute(sql,data)
+
+        # commit the changes to the database
+        conn.commit()
+
+        # close communication with the database
+        cur.close()
+
+    except (Exception, psycopg2.DatabaseError) as error:
+ #       print(error)
+        pass
+
+    finally:
+        if conn is not None:
+            conn.close()
+