Added db.py in which the PostgreSQLDatabase class were added for working with DB.

Also added templates for bot commands and bot polling.

.gitignore

@@ -160,3 +160,5 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 
+# Configuration file
+config.ini

db.py

@@ -0,0 +1,23 @@
+import psycopg2
+
+
+class PostgreSQLDatabase:
+    def __init__(self, host, database, user, password):
+        self.__host = host
+        self.__database = database
+        self.__user = user
+        self.__password = password
+
+    def execute_query(self, query):
+        connection = psycopg2.connect(
+            host=self.__host,
+            database=self.__database,
+            user=self.__user,
+            password=self.__password
+        )
+        cursor = connection.cursor()
+        cursor.execute(query)
+        result = cursor.fetchall()
+        cursor.close()
+        connection.close()
+        return result

main.py

@@ -0,0 +1,45 @@
+import telebot
+import configparser
+
+
+config = configparser.ConfigParser()
+config.read()
+
+TG_TOKEN = config.get('telebot', 'token')
+API_TOKEN = config.get('hotels_api', 'token')
+DB_HOST = config.get('database', 'host')
+DB_PORT = config.get('database', 'port')
+DB_DATABASE = config.get('database', 'database')
+DB_USER = config.get('database', 'user')
+DB_PASSWORD = config.get('database', 'password')
+
+
+bot = telebot.TeleBot(token=TG_TOKEN)
+
+
+@bot.message_handler(commands=['start', 'help'])
+def handle_start(message):
+    pass  # TODO добавить логику обработки команд start и help
+
+
+@bot.message_handler(commands=['low'])
+def handle_low(message):
+    pass  # TODO добавить логику обработки команды low
+
+
+@bot.message_handler(commands=['high'])
+def handle_high(message):
+    pass  # TODO добавить логику обработки команды high
+
+
+@bot.message_handler(commands=['custom'])
+def handle_custom(message):
+    pass  # TODO добавить логику обработки команды custom
+
+
+@bot.message_handler(commands=['history'])
+def handle_history(message):
+    pass  # TODO добавить логику обработки команды history
+
+
+bot.polling()