msp.py 'unicode' object has no attribute Error

[xrivendell7]

$ python main.py
Traceback (most recent call last):
  File "main.py", line 44, in <module>
    main()
  File "main.py", line 31, in main
    ctxt = cpabe.encrypt(pk, msg, policy_str)
  File "/Users/apple/Competion/Cryptology2018/ABE/ac17.py", line 152, in encrypt
    policy = self.util.createPolicy(policy_str)
  File "/Users/apple/Competion/Cryptology2018/ABE/msp.py", line 32, in createPolicy
    policy_obj = parser.parse(policy_string)
  File "/Library/Python/2.7/site-packages/charm/toolbox/policytree.py", line 83, in parse
    self.finalPol.parseString(string)
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1622, in parseString
    loc, tokens = self._parse( instring, 0 )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3717, in parseImpl
    return self.expr._parse( instring, loc, doActions, callPreParse=False )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3378, in parseImpl
    loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPreParse=False )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3530, in parseImpl
    ret = e._parse( instring, loc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3395, in parseImpl
    loc, exprtokens = e._parse( instring, loc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3717, in parseImpl
    return self.expr._parse( instring, loc, doActions, callPreParse=False )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3378, in parseImpl
    loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPreParse=False )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3530, in parseImpl
    ret = e._parse( instring, loc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3395, in parseImpl
    loc, exprtokens = e._parse( instring, loc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3717, in parseImpl
    return self.expr._parse( instring, loc, doActions, callPreParse=False )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3378, in parseImpl
    loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPreParse=False )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3530, in parseImpl
    ret = e._parse( instring, loc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1379, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 3530, in parseImpl
    ret = e._parse( instring, loc, doActions )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1405, in _parseNoCache
    tokens = fn( instring, tokensStart, retTokens )
  File "/Library/Python/2.7/site-packages/pyparsing.py", line 1049, in wrapper
    ret = func(*args[limit[0]:])
  File "/Library/Python/2.7/site-packages/charm/toolbox/policytree.py", line 15, in createAttribute
    return BinNode(toks[0]) # create
  File "/Library/Python/2.7/site-packages/charm/toolbox/node.py", line 26, in __init__
    elif(value >= OpType.OR and value < OpType.NONE):
  File "/Library/Python/2.7/site-packages/charm/toolbox/enum.py", line 29, in __le__
    return (self.__value <= other.__value)
AttributeError: 'unicode' object has no attribute '_EnumValue__value'

I follow your advice to install Charm in my MacOs, python is the system's default python 2.7.10 ，But meet this Error，Please Help......

[xrivendell7]

@sagrawal87

[sagrawal87]

Hi @TacXingXing, Were you able to resolve this issue?

[scmanjarrez]

Did you resolve the issue @0xTac? I just commented those lines (unicode is equivalent to str in python3)