getattr( ... ).set_value() to be replaced by setattr( ... )

[vinayak-gosale]

Hi.

Thank you so much for this epic tutorial.
I tried the tutorial and I came across the error

AttributeError: 'float' object has no attribute 'set_value'

for this part of code:
getattr(nn, self.name).set_value(new_value) in the AjustVariable class

I could fix it using:
setattr(nn, self.name, new_value)

Please review

Thanks,
Vinayak