Some code linting

Author: wxs

keras/activations.py

@@ -1,8 +1,5 @@
 from __future__ import absolute_import
-import theano
 import theano.tensor as T
-import numpy as np
-import types
 
 def softmax(x):
     return T.nnet.softmax(x.reshape((-1, x.shape[-1]))).reshape(x.shape)

keras/layers/core.py

@@ -167,7 +167,6 @@ def __init__(self, p):
 
     def get_output(self, train):
         X = self.get_input(train)
-        mask = self.get_output_mask(train)
         if self.p > 0.:
             retain_prob = 1. - self.p
             if train:

keras/layers/recurrent.py

@@ -16,7 +16,7 @@ def get_output_mask(self, train=None):
         else:
             return None
 
-    def get_padded_shuffled_mask(self, train, X, pad = 0):
+    def get_padded_shuffled_mask(self, train, X, pad=0):
         mask = self.get_input_mask(train)
         if mask is None:
             mask = T.ones_like(X.sum(axis=-1)) # is there a better way to do this without a sum?