Updated the dnn.py to write 'da', 'dz', 'dW', 'db'
Updated the dnn.py to write 'da', 'dz', 'dW', 'db'

NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q