The bug regarding novoapi for Python 3.6 is solved. The detail can be found in novoapi_for_python3x/readme.txt

novoapi_for_python3x/readme

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+novoapi( https://bitbucket.org/novolanguage/python-novo-api ) is written in Python 2.7. 
+To install it on Python 3.x the following points should be modified. 
+- basestring --> str
+- print xxx --> print({}.format(xxx)).
+- import xxx --> from . import xxx
+- except Exception, e --> except Exception as e
+- remove tuples from input arguments of a function.
+Concretely...
+
+=== novoapi\backend\__init__.py
+#import session
+from . import session
+
+
+=== novoapi\backend\session.py
+#except Exception, e:
+except Exception as e:
+
+#print self.last_message
+print(self.last_message)
+
+
+=== novoapi\asr\__init__.py
+#import segments
+#import spraaklab
+from . import segments
+from . import spraaklab
+
+
+=== novoapi\asr\segments\praat.py
+#print_tier(output, "confidence", begin, end, confidences, ('%.3f', lambda x: x))
+#print_tier(output, "words", begin, end, word_labels, ('%s', lambda x: x))
+#print_tier(output, "phones", begin, end, phones, ('%s', lambda x: x))
+print_tier(output, "confidence", begin, end, confidences, '%.3f', lambda x: x)
+print_tier(output, "words", begin, end, word_labels, '%s', lambda x: x)
+print_tier(output, "phones", begin, end, phones, '%s', lambda x: x)
+
+
+=== novoapi\asr\spraaklab\__init__.py ===
+#import schema
+from . import schema
+
+
+=== novoapi\asr\spraaklab\schema.py ===
+#if isinstance(object, basestring):
+if isinstance(object, str):
+
+except jsonschema.ValidationError as e:
+    #print data, "validated not OK", e.message
+    print("{0} validated not OK {1}".format(data, e.message))
+else:
+    #print data, "validated OK"
+    print("{0} validated OK".format(data))
+
+
+Then to make it correctly work, few more modification is needed.
+When the wav file is read using the wave module, the output (named buf) is a string of bytes on Python 2.7 while buf is a byte object on Python 3.6. 
+Therefore... 
+
+=== novoapi\backend\session.py
+#audio_packet = str(buf[j:j + buffer_size])
+audio_packet = buf[j:j + buffer_size]
+
+Also, because of this difference, Segment.__repr__ (novoapi\asr\segments\segments.py) does not work.