使用sigmoid激活在python中从零开始的神经网络。

i am new to python,trying to learn machine learning in python.i have tried to write a neural network from scratch with one hidden layer on the famous iris dataset.this is a three class classifier with out put as one hot vectors.i have also taken help from already written algos for help.for instance i used the same training set as my testing set.i am new to python,trying to learn machine lear