Fix Python 3 Syntax Errors (en masse)

research/cognitive_mapping_and_planning/scripts/script_env_vis.py

@@ -90,7 +90,7 @@ def walk_through(b):
 
   root = tk.Tk()
   image = b.render_nodes(b.task.nodes[[current_node],:])[0]
-  print image.shape
+  print(image.shape)
   image = image.astype(np.uint8)
   im = Image.fromarray(image)
   im = ImageTk.PhotoImage(im)

research/cognitive_mapping_and_planning/scripts/script_plot_trajectory.py

@@ -265,7 +265,7 @@ def plot_trajectory_first_person(dt, orig_maps, out_dir):
     tmp_file_name = 'tmp.mp4'
     line_ani.save(tmp_file_name, writer=writer, savefig_kwargs={'facecolor':'black'})
     out_file_name = os.path.join(out_dir, 'vis_{:04d}.mp4'.format(i))
-    print out_file_name
+    print(out_file_name)
 
     if fu.exists(out_file_name):
       gfile.Remove(out_file_name)
@@ -318,7 +318,7 @@ def plot_trajectory(dt, hardness, orig_maps, out_dir):
     ax.set_ylim([xy1[1], xy2[1]])
 
     file_name = os.path.join(out_dir, 'trajectory_{:04d}.png'.format(i))
-    print file_name
+    print(file_name)
     with fu.fopen(file_name, 'w') as f:
       plt.savefig(f)
     plt.close(fig)

research/cognitive_mapping_and_planning/src/utils.py

@@ -17,6 +17,7 @@ r"""Generaly Utilities.
 """
 
 import numpy as np, cPickle, os, time
+from six.moves import xrange
 import src.file_utils as fu
 import logging
 
@@ -93,12 +94,12 @@ def tic_toc_print(interval, string):
   global tic_toc_print_time_old
   if 'tic_toc_print_time_old' not in globals():
     tic_toc_print_time_old = time.time()
-    print string
+    print(string)
   else:
     new_time = time.time()
     if new_time - tic_toc_print_time_old > interval:
       tic_toc_print_time_old = new_time;
-      print string
+      print(string)
 
 def mkdir_if_missing(output_dir):
   if not fu.exists(output_dir):
@@ -165,4 +166,3 @@ def calc_pr(gt, out, wt=None):
 
   ap = voc_ap(rec, prec)
   return ap, rec, prec
-

research/compression/entropy_coder/core/entropy_coder_single.py

@@ -58,7 +58,7 @@ def main(_):
   #iteration = FLAGS.iteration
 
   if not tf.gfile.Exists(FLAGS.input_codes):
-    print '\nInput codes not found.\n'
+    print('\nInput codes not found.\n')
     return
 
   with tf.gfile.FastGFile(FLAGS.input_codes, 'rb') as code_file:

research/compression/entropy_coder/core/entropy_coder_train.py

@@ -171,7 +171,7 @@ def train():
               'code_length': model.average_code_length
           }
           np_tensors = sess.run(tf_tensors, feed_dict=feed_dict)
-          print np_tensors['code_length']
+          print(np_tensors['code_length'])
 
       sv.Stop()
 

research/differential_privacy/multiple_teachers/analysis.py

@@ -41,6 +41,7 @@ python analysis.py
 import os
 import math
 import numpy as np
+from six.moves import xrange
 import tensorflow as tf
 
 from differential_privacy.multiple_teachers.input import maybe_download
@@ -139,7 +140,7 @@ def logmgf_exact(q, priv_eps, l):
     try:
       log_t = math.log(t)
     except ValueError:
-      print "Got ValueError in math.log for values :" + str((q, priv_eps, l, t))
+      print("Got ValueError in math.log for values :" + str((q, priv_eps, l, t)))
       log_t = priv_eps * l
   else:
     log_t = priv_eps * l
@@ -171,7 +172,7 @@ def sens_at_k(counts, noise_eps, l, k):
   """
   counts_sorted = sorted(counts, reverse=True)
   if 0.5 * noise_eps * l > 1:
-    print "l too large to compute sensitivity"
+    print("l too large to compute sensitivity")
     return 0
   # Now we can assume that at k, gap remains positive
   # or we have reached the point where logmgf_exact is
@@ -268,8 +269,8 @@ def main(unused_argv):
   # Solving gives eps = (alpha - ln (delta))/l
   eps_list_nm = (total_log_mgf_nm - math.log(delta)) / l_list
 
-  print "Epsilons (Noisy Max): " + str(eps_list_nm)
-  print "Smoothed sensitivities (Noisy Max): " + str(total_ss_nm / l_list)
+  print("Epsilons (Noisy Max): " + str(eps_list_nm))
+  print("Smoothed sensitivities (Noisy Max): " + str(total_ss_nm / l_list))
 
   # If beta < eps / 2 ln (1/delta), then adding noise Lap(1) * 2 SS/eps
   # is eps,delta DP
@@ -280,12 +281,12 @@ def main(unused_argv):
   # Print the first one's scale
   ss_eps = 2.0 * beta * math.log(1/delta)
   ss_scale = 2.0 / ss_eps
-  print "To get an " + str(ss_eps) + "-DP estimate of epsilon, "
-  print "..add noise ~ " + str(ss_scale)
-  print "... times " + str(total_ss_nm / l_list)
-  print "Epsilon = " + str(min(eps_list_nm)) + "."
+  print("To get an " + str(ss_eps) + "-DP estimate of epsilon, ")
+  print("..add noise ~ " + str(ss_scale))
+  print("... times " + str(total_ss_nm / l_list))
+  print("Epsilon = " + str(min(eps_list_nm)) + ".")
   if min(eps_list_nm) == eps_list_nm[-1]:
-    print "Warning: May not have used enough values of l"
+    print("Warning: May not have used enough values of l")
 
   # Data independent bound, as mechanism is
   # 2*noise_eps DP.
@@ -294,7 +295,7 @@ def main(unused_argv):
       [logmgf_exact(1.0, 2.0 * noise_eps, l) for l in l_list])
 
   data_ind_eps_list = (data_ind_log_mgf - math.log(delta)) / l_list
-  print "Data independent bound = " + str(min(data_ind_eps_list)) + "."
+  print("Data independent bound = " + str(min(data_ind_eps_list)) + ".")
 
   return
 

research/differential_privacy/privacy_accountant/python/gaussian_moments.py

@@ -40,12 +40,15 @@ To verify that the I1 >= I2 (see comments in GaussianMomentsAccountant in
 accountant.py for the context), run the same loop above with verify=True
 passed to compute_log_moment.
 """
+from __future__ import print_function
+
 import math
 import sys
 
 import numpy as np
 import scipy.integrate as integrate
 import scipy.stats
+from six.moves import xrange
 from sympy.mpmath import mp
 
 
@@ -108,10 +111,10 @@ def compute_a(sigma, q, lmbd, verbose=False):
   a_lambda_exact = ((1.0 - q) * a_lambda_first_term_exact +
                     q * a_lambda_second_term_exact)
   if verbose:
-    print "A: by binomial expansion    {} = {} + {}".format(
+    print("A: by binomial expansion    {} = {} + {}".format(
         a_lambda_exact,
         (1.0 - q) * a_lambda_first_term_exact,
-        q * a_lambda_second_term_exact)
+        q * a_lambda_second_term_exact))
   return _to_np_float64(a_lambda_exact)
 
 
@@ -125,8 +128,8 @@ def compute_b(sigma, q, lmbd, verbose=False):
   b_fn = lambda z: (np.power(mu0(z) / mu(z), lmbd) -
                     np.power(mu(-z) / mu0(z), lmbd))
   if verbose:
-    print "M =", m
-    print "f(-M) = {} f(M) = {}".format(b_fn(-m), b_fn(m))
+    print("M =", m)
+    print("f(-M) = {} f(M) = {}".format(b_fn(-m), b_fn(m)))
     assert b_fn(-m) < 0 and b_fn(m) < 0
 
   b_lambda_int1_fn = lambda z: (mu0(z) *
@@ -140,9 +143,9 @@ def compute_b(sigma, q, lmbd, verbose=False):
   b_bound = a_lambda_m1 + b_int1 - b_int2
 
   if verbose:
-    print "B: by numerical integration", b_lambda
-    print "B must be no more than     ", b_bound
-  print b_lambda, b_bound
+    print("B: by numerical integration", b_lambda)
+    print("B must be no more than     ", b_bound)
+  print(b_lambda, b_bound)
   return _to_np_float64(b_lambda)
 
 
@@ -188,10 +191,10 @@ def compute_a_mp(sigma, q, lmbd, verbose=False):
   a_lambda_second_term = integral_inf_mp(a_lambda_second_term_fn)
 
   if verbose:
-    print "A: by numerical integration {} = {} + {}".format(
+    print("A: by numerical integration {} = {} + {}".format(
         a_lambda,
         (1 - q) * a_lambda_first_term,
-        q * a_lambda_second_term)
+        q * a_lambda_second_term))
 
   return _to_np_float64(a_lambda)
 
@@ -210,8 +213,8 @@ def compute_b_mp(sigma, q, lmbd, verbose=False):
   b_fn = lambda z: ((mu0(z) / mu(z)) ** lmbd_int -
                     (mu(-z) / mu0(z)) ** lmbd_int)
   if verbose:
-    print "M =", m
-    print "f(-M) = {} f(M) = {}".format(b_fn(-m), b_fn(m))
+    print("M =", m)
+    print("f(-M) = {} f(M) = {}".format(b_fn(-m), b_fn(m)))
     assert b_fn(-m) < 0 and b_fn(m) < 0
 
   b_lambda_int1_fn = lambda z: mu0(z) * (mu0(z) / mu(z)) ** lmbd_int
@@ -223,8 +226,8 @@ def compute_b_mp(sigma, q, lmbd, verbose=False):
   b_bound = a_lambda_m1 + b_int1 - b_int2
 
   if verbose:
-    print "B by numerical integration", b_lambda
-    print "B must be no more than    ", b_bound
+    print("B by numerical integration", b_lambda)
+    print("B must be no more than    ", b_bound)
   assert b_lambda < b_bound + 1e-5
   return _to_np_float64(b_lambda)
 

research/neural_gpu/neural_gpu.py

@@ -17,6 +17,7 @@
 import time
 
 import numpy as np
+from six.moves import xrange
 import tensorflow as tf
 
 from tensorflow.python.framework import function
@@ -500,8 +501,10 @@ class NeuralGPU(object):
             return tf.reduce_sum(encoder_outputs * tf.expand_dims(mask, 2), 1)
 
           with tf.variable_scope("decoder"):
-            def decoder_loop_fn((state, prev_cell_out, _), (cell_inp, cur_tgt)):
+            def decoder_loop_fn(state__prev_cell_out__unused, cell_inp__cur_tgt):
               """Decoder loop function."""
+              state, prev_cell_out, _ = state__prev_cell_out__unused
+              cell_inp, cur_tgt = cell_inp__cur_tgt
               attn_q = tf.layers.dense(prev_cell_out, height * nmaps,
                                        name="attn_query")
               attn_res = attention_query(attn_q, tf.get_variable(

research/neural_gpu/neural_gpu_trainer.py

@@ -22,6 +22,7 @@ import threading
 import time
 
 import numpy as np
+from six.moves import xrange
 import tensorflow as tf
 
 import program_utils
@@ -144,7 +145,7 @@ def read_data(source_path, target_path, buckets, max_size=None, print_out=True):
         while source and target and (not max_size or counter < max_size):
           counter += 1
           if counter % 100000 == 0 and print_out:
-            print "  reading data line %d" % counter
+            print("  reading data line %d" % counter)
             sys.stdout.flush()
           source_ids = [int(x) for x in source.split()]
           target_ids = [int(x) for x in target.split()]
@@ -188,7 +189,7 @@ def read_data_into_global(source_path, target_path, buckets,
   global_train_set["wmt"].append(data_set)
   train_total_size = calculate_buckets_scale(data_set, buckets, "wmt")
   if print_out:
-    print "  Finished global data reading (%d)." % train_total_size
+    print("  Finished global data reading (%d)." % train_total_size)
 
 
 def initialize(sess=None):
@@ -552,7 +553,7 @@ def score_beams_prog(beams, target, inp, history, print_out=False,
                 for h in history]
   tgt_set = set(target)
   if print_out:
-    print "target: ", tgt_prog
+    print("target: ", tgt_prog)
   inps, tgt_outs = [], []
   for i in xrange(3):
     ilist = [inp[i + 1, l] for l in xrange(inp.shape[1])]
@@ -566,11 +567,11 @@ def score_beams_prog(beams, target, inp, history, print_out=False,
       if len(olist) == 1:
         tgt_outs.append(olist[0])
       else:
-        print [program_utils.prog_vocab[x] for x in ilist if x > 0]
-        print olist
-        print tgt_prog
-        print program_utils.evaluate(tgt_prog, {"a": inps[-1]})
-        print "AAAAA"
+        print([program_utils.prog_vocab[x] for x in ilist if x > 0])
+        print(olist)
+        print(tgt_prog)
+        print(program_utils.evaluate(tgt_prog, {"a": inps[-1]}))
+        print("AAAAA")
         tgt_outs.append(olist[0])
   if not test_mode:
     for _ in xrange(7):
@@ -602,7 +603,7 @@ def score_beams_prog(beams, target, inp, history, print_out=False,
       best_prog = b_prog
       best_score = score
   if print_out:
-    print "best score: ", best_score, " best prog: ", best_prog
+    print("best score: ", best_score, " best prog: ", best_prog)
   return best, best_score
 
 
@@ -719,7 +720,7 @@ def train():
           inp = new_inp
           # If all results are great, stop (todo: not to wait for all?).
           if FLAGS.nprint > 1:
-            print scores
+            print(scores)
           if sum(scores) / float(len(scores)) >= 10.0:
             break
         # The final step with the true target.
@@ -735,7 +736,7 @@ def train():
         errors, total, seq_err = data.accuracy(
             inp, res, target, batch_size, 0, new_target, scores)
         if FLAGS.nprint > 1:
-          print "seq_err: ", seq_err
+          print("seq_err: ", seq_err)
         acc_total += total
         acc_errors += errors
         acc_seq_err += seq_err
@@ -944,8 +945,8 @@ def interactive():
     for v in tf.trainable_variables():
       shape = v.get_shape().as_list()
       total += mul(shape)
-      print (v.name, shape, mul(shape))
-    print total
+      print(v.name, shape, mul(shape))
+    print(total)
     # Start interactive loop.
     sys.stdout.write("Input to Neural GPU Translation Model.\n")
     sys.stdout.write("> ")
@@ -960,7 +961,7 @@ def interactive():
             normalize_digits=FLAGS.normalize_digits)
       else:
         token_ids = wmt.sentence_to_token_ids(inpt, en_vocab)
-      print [rev_en_vocab[t] for t in token_ids]
+      print([rev_en_vocab[t] for t in token_ids])
       # Which bucket does it belong to?
       buckets = [b for b in xrange(len(data.bins))
                  if data.bins[b] >= max(len(token_ids), len(cures))]
@@ -986,12 +987,12 @@ def interactive():
               loss = loss[0] - (data.bins[bucket_id] * FLAGS.length_norm)
               outputs = [int(np.argmax(logit, axis=1))
                          for logit in output_logits]
-            print [rev_fr_vocab[t] for t in outputs]
-            print loss, data.bins[bucket_id]
-            print linearize(outputs, rev_fr_vocab)
+            print([rev_fr_vocab[t] for t in outputs])
+            print(loss, data.bins[bucket_id])
+            print(linearize(outputs, rev_fr_vocab))
             cures.append(outputs[gen_idx])
-            print cures
-            print linearize(cures, rev_fr_vocab)
+            print(cures)
+            print(linearize(cures, rev_fr_vocab))
           if FLAGS.simple_tokenizer:
             cur_out = outputs
             if wmt.EOS_ID in cur_out:
@@ -1002,11 +1003,11 @@ def interactive():
           if loss < result_cost:
             result = outputs
             result_cost = loss
-        print ("FINAL", result_cost)
-        print [rev_fr_vocab[t] for t in result]
-        print linearize(result, rev_fr_vocab)
+        print("FINAL", result_cost)
+        print([rev_fr_vocab[t] for t in result])
+        print(linearize(result, rev_fr_vocab))
       else:
-        print "TOOO_LONG"
+        print("TOOO_LONG")
       sys.stdout.write("> ")
       sys.stdout.flush()
       inpt = sys.stdin.readline(), ""

research/neural_gpu/program_utils.py

@@ -177,7 +177,7 @@ def evaluate(program_str, input_names_to_vals, default="ERROR"):
   with stdoutIO() as s:
     # pylint: disable=bare-except
     try:
-      exec exec_str + " print(out)"
+      exec(exec_str + " print(out)")
       return s.getvalue()[:-1]
     except:
       return default
@@ -290,7 +290,7 @@ class Program(object):
 
     with stdoutIO() as s:
       # pylint: disable=exec-used
-      exec inp_str + self.body + "; print(out)"
+      exec(inp_str + self.body + "; print(out)")
       # pylint: enable=exec-used
     return s.getvalue()[:-1]
 
@@ -412,11 +412,11 @@ def gen(max_len, how_many):
     else:
       outcomes_to_programs[outcome_str] = t.flat_str()
     if counter % 5000 == 0:
-      print "== proggen: tried: " + str(counter)
-      print "== proggen: kept:  " + str(len(outcomes_to_programs))
+      print("== proggen: tried: " + str(counter))
+      print("== proggen: kept:  " + str(len(outcomes_to_programs)))
 
     if counter % 250000 == 0 and save_prefix is not None:
-      print "saving..."
+      print("saving...")
       save_counter = 0
       progfilename = os.path.join(save_prefix, "prog_" + str(counter) + ".txt")
       iofilename = os.path.join(save_prefix, "io_" + str(counter) + ".txt")
@@ -431,7 +431,7 @@ def gen(max_len, how_many):
         for (o, p) in outcomes_to_programs.iteritems():
           save_counter += 1
           if save_counter % 500 == 0:
-            print "saving %d of %d" % (save_counter, len(outcomes_to_programs))
+            print("saving %d of %d" % (save_counter, len(outcomes_to_programs)))
           fp.write(p+"\n")
           fi.write(o+"\n")
           ftp.write(str(tokenize(p, tokens))+"\n")

research/neural_gpu/wmt_utils.py

@@ -14,6 +14,8 @@
 # ==============================================================================
 """Utilities for downloading data from WMT, tokenizing, vocabularies."""
 
+from __future__ import print_function
+
 import gzip
 import os
 import re
@@ -53,20 +55,20 @@ _WMT_ENFR_DEV_URL = "http://www.statmt.org/wmt15/dev-v2.tgz"
 def maybe_download(directory, filename, url):
   """Download filename from url unless it's already in directory."""
   if not tf.gfile.Exists(directory):
-    print "Creating directory %s" % directory
+    print("Creating directory %s" % directory)
     os.mkdir(directory)
   filepath = os.path.join(directory, filename)
   if not tf.gfile.Exists(filepath):
-    print "Downloading %s to %s" % (url, filepath)
+    print("Downloading %s to %s" % (url, filepath))
     filepath, _ = urllib.request.urlretrieve(url, filepath)
     statinfo = os.stat(filepath)
-    print "Successfully downloaded", filename, statinfo.st_size, "bytes"
+    print("Successfully downloaded", filename, statinfo.st_size, "bytes")
   return filepath
 
 
 def gunzip_file(gz_path, new_path):
   """Unzips from gz_path into new_path."""
-  print "Unpacking %s to %s" % (gz_path, new_path)
+  print("Unpacking %s to %s" % (gz_path, new_path))
   with gzip.open(gz_path, "rb") as gz_file:
     with open(new_path, "wb") as new_file:
       for line in gz_file:
@@ -80,7 +82,7 @@ def get_wmt_enfr_train_set(directory):
           tf.gfile.Exists(train_path +".en")):
     corpus_file = maybe_download(directory, "training-giga-fren.tar",
                                  _WMT_ENFR_TRAIN_URL)
-    print "Extracting tar file %s" % corpus_file
+    print("Extracting tar file %s" % corpus_file)
     with tarfile.open(corpus_file, "r") as corpus_tar:
       corpus_tar.extractall(directory)
     gunzip_file(train_path + ".fr.gz", train_path + ".fr")
@@ -95,7 +97,7 @@ def get_wmt_enfr_dev_set(directory):
   if not (tf.gfile.Exists(dev_path + ".fr") and
           tf.gfile.Exists(dev_path + ".en")):
     dev_file = maybe_download(directory, "dev-v2.tgz", _WMT_ENFR_DEV_URL)
-    print "Extracting tgz file %s" % dev_file
+    print("Extracting tgz file %s" % dev_file)
     with tarfile.open(dev_file, "r:gz") as dev_tar:
       fr_dev_file = dev_tar.getmember("dev/" + dev_name + ".fr")
       en_dev_file = dev_tar.getmember("dev/" + dev_name + ".en")
@@ -206,7 +208,7 @@ def create_vocabulary(vocabulary_path, data_path, max_vocabulary_size,
     normalize_digits: Boolean; if true, all digits are replaced by 0s.
   """
   if not tf.gfile.Exists(vocabulary_path):
-    print "Creating vocabulary %s from data %s" % (vocabulary_path, data_path)
+    print("Creating vocabulary %s from data %s" % (vocabulary_path, data_path))
     vocab, chars = {}, {}
     for c in _PUNCTUATION:
       chars[c] = 1
@@ -218,7 +220,7 @@ def create_vocabulary(vocabulary_path, data_path, max_vocabulary_size,
         line = " ".join(line_in.split())
         counter += 1
         if counter % 100000 == 0:
-          print "  processing fr line %d" % counter
+          print("  processing fr line %d" % counter)
         for c in line:
           if c in chars:
             chars[c] += 1
@@ -240,7 +242,7 @@ def create_vocabulary(vocabulary_path, data_path, max_vocabulary_size,
         line = " ".join(line_in.split())
         counter += 1
         if counter % 100000 == 0:
-          print "  processing en line %d" % counter
+          print("  processing en line %d" % counter)
         for c in line:
           if c in chars:
             chars[c] += 1
@@ -371,7 +373,7 @@ def data_to_token_ids(data_path, target_path, vocabulary_path,
     normalize_digits: Boolean; if true, all digits are replaced by 0s.
   """
   if not tf.gfile.Exists(target_path):
-    print "Tokenizing data in %s" % data_path
+    print("Tokenizing data in %s" % data_path)
     vocab, _ = initialize_vocabulary(vocabulary_path)
     with tf.gfile.GFile(data_path, mode="rb") as data_file:
       with tf.gfile.GFile(target_path, mode="w") as tokens_file:
@@ -379,7 +381,7 @@ def data_to_token_ids(data_path, target_path, vocabulary_path,
         for line in data_file:
           counter += 1
           if counter % 100000 == 0:
-            print "  tokenizing line %d" % counter
+            print("  tokenizing line %d" % counter)
           token_ids = sentence_to_token_ids(line, vocab, tokenizer,
                                             normalize_digits)
           tokens_file.write(" ".join([str(tok) for tok in token_ids]) + "\n")

research/neural_programmer/data_utils.py

@@ -15,6 +15,8 @@
 """Functions for constructing vocabulary, converting the examples to integer format and building the required masks for batch computation Author: aneelakantan (Arvind Neelakantan)
 """
 
+from __future__ import print_function
+
 import copy
 import numbers
 import numpy as np
@@ -536,15 +538,15 @@ def add_special_words(utility):
   utility.reverse_word_ids[utility.word_ids[
       utility.entry_match_token]] = utility.entry_match_token
   utility.entry_match_token_id = utility.word_ids[utility.entry_match_token]
-  print "entry match token: ", utility.word_ids[
-      utility.entry_match_token], utility.entry_match_token_id
+  print("entry match token: ", utility.word_ids[
+      utility.entry_match_token], utility.entry_match_token_id)
   utility.words.append(utility.column_match_token)
   utility.word_ids[utility.column_match_token] = len(utility.word_ids)
   utility.reverse_word_ids[utility.word_ids[
       utility.column_match_token]] = utility.column_match_token
   utility.column_match_token_id = utility.word_ids[utility.column_match_token]
-  print "entry match token: ", utility.word_ids[
-      utility.column_match_token], utility.column_match_token_id
+  print("entry match token: ", utility.word_ids[
+      utility.column_match_token], utility.column_match_token_id)
   utility.words.append(utility.dummy_token)
   utility.word_ids[utility.dummy_token] = len(utility.word_ids)
   utility.reverse_word_ids[utility.word_ids[

research/neural_programmer/model.py

@@ -15,6 +15,8 @@
 """Author: aneelakantan (Arvind Neelakantan)
 """
 
+from __future__ import print_function
+
 import numpy as np
 import tensorflow as tf
 import nn_utils
@@ -545,7 +547,7 @@ class Graph():
     self.batch_log_prob = tf.zeros([self.batch_size], dtype=self.data_type)
     #Perform max_passes and at each  pass select operation and column
     for curr_pass in range(max_passes):
-      print "step: ", curr_pass
+      print("step: ", curr_pass)
       output, select, softmax, soft_softmax, column_softmax, soft_column_softmax = self.one_pass(
           select, question_embedding, hidden_vectors, hprev, prev_select_1,
           curr_pass)
@@ -636,7 +638,7 @@ class Graph():
     self.total_cost = self.compute_error()
     optimize_params = self.params.values()
     optimize_names = self.params.keys()
-    print "optimize params ", optimize_names
+    print("optimize params ", optimize_names)
     if (self.utility.FLAGS.l2_regularizer > 0.0):
       reg_cost = 0.0
       for ind_param in self.params.keys():
@@ -645,7 +647,7 @@ class Graph():
     grads = tf.gradients(self.total_cost, optimize_params, name="gradients")
     grad_norm = 0.0
     for p, name in zip(grads, optimize_names):
-      print "grads: ", p, name
+      print("grads: ", p, name)
       if isinstance(p, tf.IndexedSlices):
         grad_norm += tf.reduce_sum(p.values * p.values)
       elif not (p == None):
@@ -675,4 +677,3 @@ class Graph():
     self.step = adam.apply_gradients(zip(grads, optimize_params),
 					global_step=self.global_step)
     self.init_op = tf.global_variables_initializer()
-

research/neural_programmer/neural_programmer.py

@@ -113,9 +113,9 @@ def evaluate(sess, data, batch_size, graph, i):
                                                             graph))
     gc += ct * batch_size
     num_examples += batch_size
-  print "dev set accuracy   after ", i, " : ", gc / num_examples
-  print num_examples, len(data)
-  print "--------"
+  print("dev set accuracy   after ", i, " : ", gc / num_examples)
+  print(num_examples, len(data))
+  print("--------")
 
 
 def Train(graph, utility, batch_size, train_data, sess, model_dir,
@@ -142,9 +142,9 @@ def Train(graph, utility, batch_size, train_data, sess, model_dir,
     if (i > 0 and i % FLAGS.eval_cycle == 0):
       end = time.time()
       time_taken = end - start
-      print "step ", i, " ", time_taken, " seconds "
+      print("step ", i, " ", time_taken, " seconds ")
       start = end
-      print " printing train set loss: ", train_set_loss / utility.FLAGS.eval_cycle
+      print(" printing train set loss: ", train_set_loss / utility.FLAGS.eval_cycle)
       train_set_loss = 0.0
 
 
@@ -183,23 +183,23 @@ def master(train_data, dev_data, utility):
         file_list = sorted(selected_models.items(), key=lambda x: x[0])
         if (len(file_list) > 0):
           file_list = file_list[0:len(file_list) - 1]
-	print "list of models: ", file_list
+        print("list of models: ", file_list)
         for model_file in file_list:
           model_file = model_file[1]
-          print "restoring: ", model_file
+          print("restoring: ", model_file)
           saver.restore(sess, model_dir + "/" + model_file)
           model_step = int(
               model_file.split("_")[len(model_file.split("_")) - 1])
-          print "evaluating on dev ", model_file, model_step
+          print("evaluating on dev ", model_file, model_step)
           evaluate(sess, dev_data, batch_size, graph, model_step)
     else:
       ckpt = tf.train.get_checkpoint_state(model_dir)
-      print "model dir: ", model_dir
+      print("model dir: ", model_dir)
       if (not (tf.gfile.IsDirectory(utility.FLAGS.output_dir))):
-        print "create dir: ", utility.FLAGS.output_dir
+        print("create dir: ", utility.FLAGS.output_dir)
         tf.gfile.MkDir(utility.FLAGS.output_dir)
       if (not (tf.gfile.IsDirectory(model_dir))):
-        print "create dir: ", model_dir
+        print("create dir: ", model_dir)
         tf.gfile.MkDir(model_dir)
       Train(graph, utility, batch_size, train_data, sess, model_dir,
             saver)
@@ -225,10 +225,10 @@ def main(args):
   train_data = data_utils.complete_wiki_processing(train_data, utility, True)
   dev_data = data_utils.complete_wiki_processing(dev_data, utility, False)
   test_data = data_utils.complete_wiki_processing(test_data, utility, False)
-  print "# train examples ", len(train_data)
-  print "# dev examples ", len(dev_data)
-  print "# test examples ", len(test_data)
-  print "running open source"
+  print("# train examples ", len(train_data))
+  print("# dev examples ", len(dev_data))
+  print("# test examples ", len(test_data))
+  print("running open source")
   #construct TF graph and train or evaluate
   master(train_data, dev_data, utility)
 

research/neural_programmer/parameters.py

@@ -59,7 +59,7 @@ class Parameters:
       #Biases for the gates and cell
       for bias in ["i", "f", "c", "o"]:
         if (bias == "f"):
-          print "forget gate bias"
+          print("forget gate bias")
           params[key + "_" + bias] = tf.Variable(
               tf.random_uniform([embedding_dims], 1.0, 1.1, self.utility.
                                 tf_data_type[self.utility.FLAGS.data_type]))

research/neural_programmer/wiki_data.py

@@ -22,6 +22,8 @@ columns.
 lookup answer (or matrix) is also split into number and word lookup matrix
 Author: aneelakantan (Arvind Neelakantan)
 """
+from __future__ import print_function
+
 import math
 import os
 import re
@@ -56,7 +58,7 @@ def correct_unicode(string):
   #string = re.sub("[“”«»]", "\"", string)
   #string = re.sub("[•†‡]", "", string)
   #string = re.sub("[‐‑–—]", "-", string)
-  string = re.sub(ur'[\u2E00-\uFFFF]', "", string)
+  string = re.sub(r'[\u2E00-\uFFFF]', "", string)
   string = re.sub("\\s+", " ", string).strip()
   return string
 
@@ -78,7 +80,7 @@ def full_normalize(string):
   # Remove trailing info in brackets
   string = re.sub("\[[^\]]*\]", "", string)
   # Remove most unicode characters in other languages
-  string = re.sub(ur'[\u007F-\uFFFF]', "", string.strip())
+  string = re.sub(r'[\u007F-\uFFFF]', "", string.strip())
   # Remove trailing info in parenthesis
   string = re.sub("\([^)]*\)$", "", string.strip())
   string = final_normalize(string)
@@ -298,7 +300,7 @@ class WikiQuestionGenerator(object):
             question_id, question, target_canon, context)
         self.annotated_tables[context] = []
       counter += 1
-    print "Annotated examples loaded ", len(self.annotated_examples)
+    print("Annotated examples loaded ", len(self.annotated_examples))
     f.close()
 
   def is_number_column(self, a):

research/object_detection/utils/visualization_utils_test.py

@@ -145,7 +145,7 @@ class VisualizationUtilsTest(tf.test.TestCase):
         for i in range(images_with_boxes_np.shape[0]):
           img_name = 'image_' + str(i) + '.png'
           output_file = os.path.join(self.get_temp_dir(), img_name)
-          print 'Writing output image %d to %s' % (i, output_file)
+          print('Writing output image %d to %s' % (i, output_file))
           image_pil = Image.fromarray(images_with_boxes_np[i, ...])
           image_pil.save(output_file)
 

research/real_nvp/celeba_formatting.py

@@ -30,6 +30,8 @@ python celeba_formatting.py \
 
 """
 
+from __future__ import print_function
+
 import os
 import os.path
 
@@ -70,7 +72,7 @@ def main():
     writer = tf.python_io.TFRecordWriter(file_out)
     for example_idx, img_fn in enumerate(img_fn_list):
         if example_idx % 1000 == 0:
-            print example_idx, "/", num_examples
+            print(example_idx, "/", num_examples)
         image_raw = scipy.ndimage.imread(os.path.join(fn_root, img_fn))
         rows = image_raw.shape[0]
         cols = image_raw.shape[1]

research/real_nvp/imnet_formatting.py

@@ -34,6 +34,8 @@ done
 
 """
 
+from __future__ import print_function
+
 import os
 import os.path
 
@@ -73,10 +75,10 @@ def main():
             file_out = "%s_%05d.tfrecords"
             file_out = file_out % (FLAGS.file_out,
                                    example_idx // n_examples_per_file)
-            print "Writing on:", file_out
+            print("Writing on:", file_out)
             writer = tf.python_io.TFRecordWriter(file_out)
         if example_idx % 1000 == 0:
-            print example_idx, "/", num_examples
+            print(example_idx, "/", num_examples)
         image_raw = scipy.ndimage.imread(os.path.join(fn_root, img_fn))
         rows = image_raw.shape[0]
         cols = image_raw.shape[1]

research/real_nvp/lsun_formatting.py

@@ -29,6 +29,7 @@ python lsun_formatting.py \
     --fn_root [LSUN_FOLDER]
 
 """
+from __future__ import print_function
 
 import os
 import os.path
@@ -68,10 +69,10 @@ def main():
             file_out = "%s_%05d.tfrecords"
             file_out = file_out % (FLAGS.file_out,
                                    example_idx // n_examples_per_file)
-            print "Writing on:", file_out
+            print("Writing on:", file_out)
             writer = tf.python_io.TFRecordWriter(file_out)
         if example_idx % 1000 == 0:
-            print example_idx, "/", num_examples
+            print(example_idx, "/", num_examples)
         image_raw = numpy.array(Image.open(os.path.join(fn_root, img_fn)))
         rows = image_raw.shape[0]
         cols = image_raw.shape[1]