got rid of all the xrange

Author: gyom

code/DBN.py

@@ -75,7 +75,7 @@ def __init__(self, numpy_rng, theano_rng=None, n_ins=784,
         # training the DBN by doing stochastic gradient descent on the
         # MLP.
 
-        for i in xrange(self.n_layers):
+        for i in range(self.n_layers):
             # construct the sigmoidal layer
 
             # the size of the input is either the number of hidden
@@ -267,11 +267,11 @@ def build_finetune_functions(self, datasets, batch_size, learning_rate):
 
         # Create a function that scans the entire validation set
         def valid_score():
-            return [valid_score_i(i) for i in xrange(n_valid_batches)]
+            return [valid_score_i(i) for i in range(n_valid_batches)]
 
         # Create a function that scans the entire test set
         def test_score():
-            return [test_score_i(i) for i in xrange(n_test_batches)]
+            return [test_score_i(i) for i in range(n_test_batches)]
 
         return train_fn, valid_score, test_score
 
@@ -329,12 +329,12 @@ def test_DBN(finetune_lr=0.1, pretraining_epochs=100,
     print '... pre-training the model'
     start_time = timeit.default_timer()
     ## Pre-train layer-wise
-    for i in xrange(dbn.n_layers):
+    for i in range(dbn.n_layers):
         # go through pretraining epochs
-        for epoch in xrange(pretraining_epochs):
+        for epoch in range(pretraining_epochs):
             # go through the training set
             c = []
-            for batch_index in xrange(n_train_batches):
+            for batch_index in range(n_train_batches):
                 c.append(pretraining_fns[i](index=batch_index,
                                             lr=pretrain_lr))
             print 'Pre-training layer %i, epoch %d, cost ' % (i, epoch),
@@ -379,7 +379,7 @@ def test_DBN(finetune_lr=0.1, pretraining_epochs=100,
 
     while (epoch < training_epochs) and (not done_looping):
         epoch = epoch + 1
-        for minibatch_index in xrange(n_train_batches):
+        for minibatch_index in range(n_train_batches):
 
             minibatch_avg_cost = train_fn(minibatch_index)
             iter = (epoch - 1) * n_train_batches + minibatch_index

code/cA.py

@@ -30,7 +30,6 @@
 """
 
 from __future__ import print_function
-from six.moves import xrange
 
 import os
 import sys
@@ -287,10 +286,10 @@ def test_cA(learning_rate=0.01, training_epochs=20,
     ############
 
     # go through training epochs
-    for epoch in xrange(training_epochs):
+    for epoch in range(training_epochs):
         # go through trainng set
         c = []
-        for batch_index in xrange(n_train_batches):
+        for batch_index in range(n_train_batches):
             c.append(train_ca(batch_index))
 
         c_array = numpy.vstack(c)

code/hmc/test_hmc.py

@@ -1,6 +1,5 @@
 
 from __future__ import print_function
-from six.moves import xrange
 
 import numpy
 import theano
@@ -39,10 +38,10 @@ def gaussian_energy(x):
                           initial_stepsize=1e-3, stepsize_max=0.5)
 
     # Start with a burn-in process
-    garbage = [sampler.draw() for r in xrange(burnin)]  # burn-in Draw
+    garbage = [sampler.draw() for r in range(burnin)]  # burn-in Draw
     # `n_samples`: result is a 3D tensor of dim [n_samples, batchsize,
     # dim]
-    _samples = numpy.asarray([sampler.draw() for r in xrange(n_samples)])
+    _samples = numpy.asarray([sampler.draw() for r in range(n_samples)])
     # Flatten to [n_samples * batchsize, dim]
     samples = _samples.T.reshape(dim, -1).T
 

code/logistic_cg.py

@@ -239,15 +239,15 @@ def cg_optimization_mnist(n_epochs=50, mnist_pkl_gz='mnist.pkl.gz'):
     def train_fn(theta_value):
         classifier.theta.set_value(theta_value, borrow=True)
         train_losses = [batch_cost(i * batch_size)
-                        for i in xrange(n_train_batches)]
+                        for i in range(n_train_batches)]
         return numpy.mean(train_losses)
 
     # creates a function that computes the average gradient of cost with
     # respect to theta
     def train_fn_grad(theta_value):
         classifier.theta.set_value(theta_value, borrow=True)
         grad = batch_grad(0)
-        for i in xrange(1, n_train_batches):
+        for i in range(1, n_train_batches):
             grad += batch_grad(i * batch_size)
         return grad / n_train_batches
 
@@ -258,7 +258,7 @@ def callback(theta_value):
         classifier.theta.set_value(theta_value, borrow=True)
         #compute the validation loss
         validation_losses = [validate_model(i * batch_size)
-                             for i in xrange(n_valid_batches)]
+                             for i in range(n_valid_batches)]
         this_validation_loss = numpy.mean(validation_losses)
         print('validation error %f %%' % (this_validation_loss * 100.,))
 
@@ -268,7 +268,7 @@ def callback(theta_value):
             # testing dataset
             validation_scores[0] = this_validation_loss
             test_losses = [test_model(i * batch_size)
-                           for i in xrange(n_test_batches)]
+                           for i in range(n_test_batches)]
             validation_scores[1] = numpy.mean(test_losses)
 
     ###############

code/lstm.py

@@ -3,7 +3,6 @@
 '''
 
 from __future__ import print_function
-from six.moves import xrange
 import six.moves.cPickle as pickle
 
 from collections import OrderedDict
@@ -549,7 +548,7 @@ def train_lstm(
     estop = False  # early stop
     start_time = time.time()
     try:
-        for eidx in xrange(max_epochs):
+        for eidx in range(max_epochs):
             n_samples = 0
 
             # Get new shuffled index for the training set.

code/rbm.py

@@ -6,7 +6,6 @@
 """
 
 from __future__ import print_function
-from six.moves import xrange
 
 import timeit
 
@@ -435,11 +434,11 @@ def test_rbm(learning_rate=0.1, training_epochs=15,
     start_time = timeit.default_timer()
 
     # go through training epochs
-    for epoch in xrange(training_epochs):
+    for epoch in range(training_epochs):
 
         # go through the training set
         mean_cost = []
-        for batch_index in xrange(n_train_batches):
+        for batch_index in range(n_train_batches):
             mean_cost += [train_rbm(batch_index)]
 
         print('Training epoch %d, cost is ' % epoch, numpy.mean(mean_cost))
@@ -522,7 +521,7 @@ def test_rbm(learning_rate=0.1, training_epochs=15,
         (29 * n_samples + 1, 29 * n_chains - 1),
         dtype='uint8'
     )
-    for idx in xrange(n_samples):
+    for idx in range(n_samples):
         # generate `plot_every` intermediate samples that we discard,
         # because successive samples in the chain are too correlated
         vis_mf, vis_sample = sample_fn()

code/rnnrbm.py

@@ -4,7 +4,6 @@
 # More information at http://deeplearning.net/tutorial/rnnrbm.html
 
 from __future__ import print_function
-from six.moves import xrange
 
 import glob
 import os
@@ -249,12 +248,12 @@ def train(self, files, batch_size=100, num_epochs=200):
                    for f in files]
 
         try:
-            for epoch in xrange(num_epochs):
+            for epoch in range(num_epochs):
                 numpy.random.shuffle(dataset)
                 costs = []
 
                 for s, sequence in enumerate(dataset):
-                    for i in xrange(0, len(sequence), batch_size):
+                    for i in range(0, len(sequence), batch_size):
                         cost = self.train_function(sequence[i:i + batch_size])
                         costs.append(cost)
 

code/rnnslu.py

@@ -1,6 +1,5 @@
 
 from __future__ import print_function
-from six.moves import xrange
 import six.moves.cPickle as pickle
 
 from collections import OrderedDict
@@ -322,7 +321,7 @@ def main(param=None):
     # train with early stopping on validation set
     best_f1 = -numpy.inf
     param['clr'] = param['lr']
-    for e in xrange(param['nepochs']):
+    for e in range(param['nepochs']):
 
         # shuffle
         shuffle([train_lex, train_ne, train_y], param['seed'])

code/utils.py

@@ -6,8 +6,6 @@
 image from a set of samples or weights.
 """
 
-
-from six.moves import xrange
 import numpy
 
 
@@ -86,7 +84,7 @@ def tile_raster_images(X, img_shape, tile_shape, tile_spacing=(0, 0),
         else:
             channel_defaults = [0., 0., 0., 1.]
 
-        for i in xrange(4):
+        for i in range(4):
             if X[i] is None:
                 # if channel is None, fill it with zeros of the correct
                 # dtype
@@ -116,8 +114,8 @@ def tile_raster_images(X, img_shape, tile_shape, tile_spacing=(0, 0),
             dt = 'uint8'
         out_array = numpy.zeros(out_shape, dtype=dt)
 
-        for tile_row in xrange(tile_shape[0]):
-            for tile_col in xrange(tile_shape[1]):
+        for tile_row in range(tile_shape[0]):
+            for tile_col in range(tile_shape[1]):
                 if tile_row * tile_shape[1] + tile_col < X.shape[0]:
                     this_x = X[tile_row * tile_shape[1] + tile_col]
                     if scale_rows_to_unit_interval:

doc/gettingstarted.txt

@@ -578,7 +578,7 @@ of a strategy based on a geometrically increasing amount of patience.
     while (epoch < n_epochs) and (not done_looping):
         # Report "1" for first epoch, "n_epochs" for last epoch
         epoch = epoch + 1
-        for minibatch_index in xrange(n_train_batches):
+        for minibatch_index in range(n_train_batches):
 
             d_loss_wrt_params = ... # compute gradient
             params -= learning_rate * d_loss_wrt_params # gradient descent