`cp_als` with option `printitn=0` causes `ZeroDivisionError`

[jeremy-myers]

Minimal working example:

R = 3
np.random.seed(0)  # Set seed for reproducibility
X = ttb.tensor(np.random.rand(6,8,10), shape=(6,8,10))
M = ttb.cp_als(X, R, printitn=0)

ZeroDivisionError                         Traceback (most recent call last)
Cell In[83], line 1
----> 1 M = ttb.cp_als(X, R, printitn=0)

File ~/pyttb/pyttb/cp_als.py:241, in cp_als(input_tensor, rank, stoptol, maxiters, dimorder, init, printitn, fixsigns)
    238 else:
    239     flag = 1
--> 241 if (divmod(iteration, printitn)[1] == 0) or (printitn > 0 and flag == 0):
    242     print(f" Iter {iteration}: f = {fit:e} f-delta = {fitchange:7.1e}")
    244 # Check for convergence

ZeroDivisionError: integer division or modulo by zero