import psycopg2 

conn = psycopg2.connect(host="localhost",database="robotigs", user="richard", password="Ha-8-H+")

cur = conn.cursor()
cur.execute("""SELECT datname from pg_database""")
rows = cur.fetchall()

print ("\nDit zijn de bruikbare databases:")
for row in rows:
    print ("   ", row[0])