Import print function from future

This commit changes print to the version used in python3 and
keeps backwards compatibbility with python2 by importing
from future.

acquire_data/say_numbers_prompt.py

@@ -1,10 +1,11 @@
+from __future__ import print_function
 import time
 import math
 
 """
-Prompts you to say numbers. 
+Prompts you to say numbers.
 
-Start this, and then hit "Record" in Audacity. 
+Start this, and then hit "Record" in Audacity.
 http://www.audacityteam.org/download/
 When you start Audacity, look in the bottom-left and set the Project Rate (Hz) to 8000.
 
@@ -15,7 +16,7 @@
 - Try a short recording session first to make sure everything works OK before doing the full recording.
 
 
-When done, export the audio as one big .wav file and use 'split_and_label_numbers.py' 
+When done, export the audio as one big .wav file and use 'split_and_label_numbers.py'
 to make the labeled dataset.
 """
 
@@ -43,22 +44,22 @@ def generate_number_sequence():
 def show_numbers():
     nums = generate_number_sequence()
 
-    print "Get ready..."
+    print("Get ready...")
     time.sleep(1)
 
     t_start = time.time()
     for i, num in enumerate(nums):
         if (float(i)/len(nums) * 100) % 10 == 0:
-            print "\n====", float(i)/len(nums)*100, "% done====\n"
+            print("\n====", float(i)/len(nums)*100, "% done====\n")
         else:
-            print ""
+            print("")
 
         t_next_display = t_start + (i + 1) * DELAY_BETWEEN_NUMBERS
         t_next_blank = t_next_display + 2.5
 
         # display a number
         wait_until(t_next_display)
-        print num
+        print(num)
 
         # blank
         wait_until(t_next_blank)

utils/fsdd.py

@@ -1,3 +1,4 @@
+from __future__ import print_function
 import os
 from collections import defaultdict
 import scipy.io.wavfile
@@ -47,7 +48,7 @@ def get_spectrograms(data_dir=None):
 
         if data_dir is None:
             data_dir = os.path.dirname(__file__) + '/../spectrograms'
-            print data_dir
+            print(data_dir)
 
         file_paths = [f for f in os.listdir(data_dir) if os.path.isfile(os.path.join(data_dir, f)) and '.png' in f]
 

utils/spectogramer.py

@@ -1,4 +1,4 @@
-from __future__ import division
+from __future__ import division, print_function
 from os import listdir
 from os.path import isfile, join
 from wand.image import Image
@@ -48,7 +48,7 @@ def dir_to_spectrogram(audio_dir, spectrogram_dir, spectrogram_dimensions=(64, 6
     file_names = [f for f in listdir(audio_dir) if isfile(join(audio_dir, f)) and '.wav' in f]
 
     for file_name in file_names:
-        print file_name
+        print(file_name)
         audio_path = audio_dir + file_name
         spectogram_path = spectrogram_dir + file_name.replace('.wav', '.png')
         wav_to_spectrogram(audio_path, spectogram_path, spectrogram_dimensions=spectrogram_dimensions, noverlap=noverlap, cmap=cmap)