How do I use randrange() on a random seed in python 3?

So, I was asked in class to use the specific random seed 237. But I don't know how to properly implement it. For example, this is my code. in python 3. In this example I'm basically throwing m number of dice with k number of sides and trying to return a tuple of m length.

import random
rng=random.seed(237)
# create random number generator

def throwDice(m, k):
    x = 0
    L = []
    while x < m :
        die = rng.randrange(1,k+1)
        L.append(die)
        x+=1
    return print(tuple(L))
throwDice(11,5)

Yet, the command prompt keeps showing the error

die = rng.randrange(1,k+1)
AttributeError: 'NoneType' object has no attribute 'randrange'`

Could I get an explanation of what's wrong :(