random.choices(seq, k={1,3})

  
>>> import random
>>> 
>>> out = [random.choices([1, 2, 3, 4, 5], k=n) for n in (1, 2, 3)]
>>> out
[[1], [1, 3], [2, 1, 4]]
>>>

 def barkrandoum():
    #do stuff
    t = Timer( 1, barkrandoum )
    t.start()
    rnd=random.randrange(1, 8)
    x = rnd  
    return str(x)