test using import with list

imports = ["sys", "time", "random"]

i = 0
while i < len(imports):
    try:
        module = __import__(imports[i])
        globals()[imports[i]] = module
    except NameError:
        print("modules not loaded")
    i += 1

def loading(times, msg="Loading modules"):
    sys.stdout.write(msg)
    for i in range(times):
        sys.stdout.write('.')
        sys.stdout.flush()
        time.sleep(int(random.random()*1.9))

loading(3)