Week 2 Lab Assignment Error printing result

[Bonthaly]

I’m getting error when trying to print. The code was already generated and I’m unable to edit it.

<class 'numpy.ndarray'>
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-15-335d76763737> in <module>
      5 cost = compute_cost(x_train, y_train, initial_w, initial_b)
      6 print(type(cost))
----> 7 print(f'Cost at initial w: {cost:.3f}')
      8 
      9 # Public tests

TypeError: unsupported format string passed to numpy.ndarray.__format__

[Bonthaly]

[TMosh]

I believe this means your compute_cost() function is returning the wrong data type, or it is returning the wrong size.