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https://issues.apache.org/jira/browse/TINKERPOP-1896?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stephen mallette reassigned TINKERPOP-1896:
-------------------------------------------

    Assignee: stephen mallette

> gremlin-python lambdas error when working on Maps
> -------------------------------------------------
>
>                 Key: TINKERPOP-1896
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1896
>             Project: TinkerPop
>          Issue Type: Bug
>          Components: python
>    Affects Versions: 3.3.1
>            Reporter: Branden Moore
>            Assignee: stephen mallette
>            Priority: Major
>             Fix For: 3.2.8, 3.3.2
>
>
> Gremlin-python lambdas throw an error on the server when the preceding step 
> produces maps.
> {code}
> Traceback (most recent call last):
>   File "foo.py", line 15, in <module>
>     print g.V().has('name').match(__.as_('x').label().as_('lbl'), 
> __.as_('x').id().as_('id')).select('lbl', 'id').map(lambda: "lambda x: 
> type(x)").toList()
>   File 
> "/user/.local/lib/python2.7/site-packages/gremlin_python/process/traversal.py",
>  line 52, in toList
>     return list(iter(self))
>   File 
> "/user/.local/lib/python2.7/site-packages/gremlin_python/process/traversal.py",
>  line 70, in next
>     return self.__next__()
>   File 
> "/user/.local/lib/python2.7/site-packages/gremlin_python/process/traversal.py",
>  line 43, in __next__
>     self.traversal_strategies.apply_strategies(self)
>   File 
> "/user/.local/lib/python2.7/site-packages/gremlin_python/process/traversal.py",
>  line 352, in apply_strategies
>     traversal_strategy.apply(traversal)
>   File 
> "/user/.local/lib/python2.7/site-packages/gremlin_python/driver/remote_connection.py",
>  line 143, in apply
>     remote_traversal = self.remote_connection.submit(traversal.bytecode)
>   File 
> "/user/.local/lib/python2.7/site-packages/gremlin_python/driver/driver_remote_connection.py",
>  line 54, in submit
>     results = result_set.all().result()
>   File 
> "/user/.local/lib/python2.7/site-packages/concurrent/futures/_base.py", line 
> 462, in result
>     return self.__get_result()
>   File 
> "/user/.local/lib/python2.7/site-packages/concurrent/futures/_base.py", line 
> 414, in __get_result
>     raise exception_type, self._exception, self._traceback
> gremlin_python.driver.protocol.GremlinServerError: 599: AttributeError: type 
> object 'org.apache.tinkerpop.gremlin.process.traversal.dsl' has no attribute 
> 'as_' in <script> at line number 1
> {code}



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