Encoding string value with embedded "'" fails

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Expected Behavior

Encoding should work for valid value

Current Behavior

Error occurs

Steps to Reproduce

Run the script below

Your Script

from ydk.models.openconfig import openconfig_routing_policy \
    as oc_routing_policy                                                                                                                                                 
routing_policy = oc_routing_policy.RoutingPolicy()

com = oc_routing_policy.RoutingPolicy.DefinedSets.BgpDefinedSets.CommunitySets.CommunitySet()
com.community_set_name = "COMMUNITY-SET1"
com.config.community_set_name = "COMMUNITY-SET1"
com.config.community_member.append("ios-regex '65172:17...$'")
com.config.community_member.append("65172:16001")

com.state.community_set_name = "COMMUNITY-SET1"        
com.state.community_member.append("ios-regex '^65172:17...$'") 
com.state.community_member.append("65172:16001")  

routing_policy.defined_sets.bgp_defined_sets.community_sets.community_set.append(com)

codec.encode(provider, routing_policy)

Logs

Enable logging and post the logs below

In [5]: codec.encode(codec_p,routing_policy)
---------------------------------------------------------------------------
YPYModelError                             Traceback (most recent call last)
<ipython-input-5-2f16c043627d> in <module>()
----> 1 codec.encode(codec_p,routing_policy)

~/p/lib/python3.6/site-packages/ydk/errors/error_handler.py in helper(self, provider, entity, *args, **kwargs)
    110             err_msg = "'{0}' and '{1}' cannot be None".format(pname, ename)
    111             raise _YPYServiceError(error_msg=err_msg)
--> 112         return func(self, provider, entity, *args, **kwargs)
    113     return helper

~/p/lib/python3.6/site-packages/ydk/services/codec_service.py in encode(self, provider, entity_holder, pretty, subtree)
     72             return payload_map
     73         else:
---> 74             return self._encode(provider, entity_holder, pretty, subtree)
     75 
     76     def _encode(self, provider, entity, pretty, subtree):

~/p/lib/python3.6/site-packages/ydk/services/codec_service.py in _encode(self, provider, entity, pretty, subtree)
    103             result = codec_service.encode(data_node, provider.encoding, pretty)
    104             self.logger.debug("Performing encode operation, resulting in {}".format(result))
--> 105             return result
    106 
    107     @_check_argument

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py in __exit__(self, type, value, traceback)
     97                 value = type()
     98             try:
---> 99                 self.gen.throw(type, value, traceback)
    100             except StopIteration as exc:
    101                 # Suppress StopIteration *unless* it's the same exception that

~/p/lib/python3.6/site-packages/ydk/errors/error_handler.py in handle_runtime_error()
     80     finally:
     81         if _exc:
---> 82             _raise(_exc)
     83 
     84 

~/p/lib/python3.6/site-packages/ydk/errors/error_handler.py in _raise(exc)
     52     """
     53     if sys.version_info >= (3,3):
---> 54         exec("raise exc from None")
     55     else:
     56         raise exc

~/p/lib/python3.6/site-packages/ydk/errors/error_handler.py in <module>()

YPYModelError:  Unexpected character(s) '^' (^65172:17...$'']). Path: 

System Information

ydk 0.6.2