input = open('svebaze.sql', 'r')
current_file = None
for line in input:
    if line.startswith("USE '"):
        if current_file:
            current_file.close()
        output_filename = "db_%s.sql" % (line.split("'")[1],)
        current_file = open(output_filename, 'w')
    else:
        current_file.write(line)
current_file.close()