remove all from __future__ import unicode_literals due to the staggering amount of warnings

i don't know why i thought that using unicode_literals might be a good
idea, but judging by the times this caused headaches: NOPE!

Author: joernhees

cluster.py

@@ -2,7 +2,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 
 from collections import Counter
 from collections import OrderedDict

config/__init__.py

@@ -2,7 +2,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 """Config for graph_learner.
 
 The actual config values can be found in defaults.py, the rest are helpers which

config/defaults.py

@@ -2,7 +2,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 
 from os import path
 
@@ -35,7 +34,7 @@
 OVERFITTING_PUNISHMENT = 0.25  # multiplier for single ?source or ?target match
 
 # SPARQL query:
-SPARQL_ENDPOINT = b'http://dbpedia.org/sparql'
+SPARQL_ENDPOINT = 'http://dbpedia.org/sparql'
 BATCH_SIZE = 384  # tested to rarely result in error recursions
 QUERY_TIMEOUT_FACTOR = 32  # timeout factor compared to a simplistic query
 QUERY_TIMEOUT_MIN = 2  # minimum query timeout in seconds

config/helpers.py

@@ -2,7 +2,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 
 from collections import OrderedDict
 import logging

eval/data_generator.py

@@ -3,7 +3,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 
 import random
 from uuid import uuid4

eval/data_loader.py

@@ -3,7 +3,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 
 import urllib2
 

eval/enumerate.py

@@ -3,7 +3,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 
 from copy import deepcopy
 from itertools import combinations

gp_learner.py

@@ -3,7 +3,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 
 import sys
 if __name__ == '__main__':
@@ -1521,9 +1520,11 @@ def main(
         tests=False,
         **kwds
 ):
-    logging.info('encoding check: äöüß\U0001F385')
-    logging.info('encoding check: äöüß\U0001F385'.encode('utf-8'))
-    print('encoding check: äöüß\U0001F385')
+    logging.info('encoding check: äöüß🎅')  # logging utf-8 byte string
+    logging.info(u'encoding check: äöüß\U0001F385')  # logging unicode string
+    logging.info(u'encoding check: äöüß\U0001F385'.encode('utf-8'))  # convert
+    print('encoding check: äöüß🎅')  # printing utf-8 byte string
+    print(u'encoding check: äöüß\U0001F385')  # printing unicode string
 
     main_start = datetime.utcnow()
 

gp_query.py

@@ -3,7 +3,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 
 from collections import defaultdict
 from collections import Counter

graph_pattern.py

@@ -3,7 +3,6 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
-from __future__ import unicode_literals
 
 from collections import Counter
 from collections import Iterable