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Add python3 support #2

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ba84069
Add python3 support
jiashenC Jun 12, 2018
a386e03
Edit requirement page
jiashenC Jun 12, 2018
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6 changes: 5 additions & 1 deletion parsetron/parsetron.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,8 @@
import copy
from collections import deque
from collections import Counter
from past.types import unicode, basestring
from past.builtins import xrange

__doc__ = \
"""
Expand Down Expand Up @@ -88,7 +90,7 @@ def __new__(typ, name, bases, dct):
return super(MetaGrammar, typ).__new__(typ, name, bases, dct)


class Grammar(object):
class Grammar(object, metaclass=MetaGrammar):
"""
Grammar user interface. Users should inherit this grammar and define a
final grammar GOAL as class variable.
Expand All @@ -114,8 +116,10 @@ class Grammar(object):
__metaclass__ = MetaGrammar

def __new__(cls):
print(cls.__dict__['_grammar_'])
return cls.__dict__['_grammar_']


@staticmethod
def test():
"""
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1 change: 1 addition & 0 deletions requirements.txt
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Expand Up @@ -10,3 +10,4 @@ tox
virtualenv
coveralls
sphinx_rtd_theme
future