I am doing the assignment and successfully completed the first 4 exercises. The comments on the questions are clear and easy to follow and that is what I have been following. However, I am getting a syntax error in exercise 5 when assigning dw and db.
I have checked the spacing and tried restarting the kernel as well. I would greatly appreciate some help. Thank you in advance
the real error might be in the lines around the one shown. what’s on line 40/41?
The immediate lines above are just comments for the code, the actual code above this is the cost function implementation. Should I provide a screenshot of that?
I fixed the implementation of the cost function and now it is working. Sorry for the trouble
When you get a syntax error at the beginning of a line like that, it means there is something incomplete about the previous line of code (ignoring comments of course). The usual cause is a missing close parenthesis or close bracket. The notebook editor is syntax aware: just click on a paren and it will highlight the matching one. Or not! 
So the “meta” lesson here is that when you can’t find the syntax error, it means you are looking in the wrong place. 
Yes this is exactly what happened. I was lucky enough to notice it earlier and I have completed the assignment without any other issues.