import psycopg2
from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT

try:
    conn = psycopg2.connect("dbname='db1' user='egor0' host='localhost' password=''")

except:
    print ("I am unable to connect to the database")
conn.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
conn.autocommit = True
cur = conn.cursor()
cur.execute("""SELECT datname from pg_database""")
rows = cur.fetchall()
for row in rows:
    print(row[0])



cur.execute("""DROP DATABASE db1""")