>>> import psycopg2
>>> conn = psycopg2.connect(database ="agro1", user = "postgres",
			password = "postgres", host = "localhost",
			port = "5432")
>>> print("Connection Successful to PostgreSQL")
Connection Successful to PostgreSQL

>>> cur = conn.cursor()
>>> select * from Marki
SyntaxError: invalid syntax

>>> query = "select * from Marki"
>>> cur.execute(query)
Traceback (most recent call last):
  File "<pyshell#23>", line 1, in <module>
    cur.execute(query)
psycopg2.errors.UndefinedTable: ОШИБКА:  отношение "marki" не существует
LINE 1: select * from Marki
                      ^