We can use sklearn library to write one or two line code to fit and predict data, so is it necessary to write conventional codes for assignments?
Why conventional methods
Hello @raushan.iitdhn,
The reason behind why we implement each of the algorithms from scratch is to learn how it all works under the hood. So, for assignments, its not necessary you write your own classifier/regressor, if you are good with the internals of the algorithms, you sure can use libraries to save some time.
Happy Learning 
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