import psycopg2

# Connecting to database.
try:
    connect = psycopg2.connect(database='fn1132_2017', user='student', host='195.19.32.74', password='bmstu')
    cursor = connect.cursor()
except:
    print("Unable connect to database.")
    exit(100)

program_run = True
query = ""

while program_run:
    print("Please enter your command or EXIT to leave program:")

    query = input()
    if query == "EXIT":
        program_run = False
    else:
        try:
            cursor.execute(query)
        except:
            print("Bad query.")
        finally:
            if "select" in query.lower():
                for row in cursor:
                    print(row)

connect.close()