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https://issues.apache.org/jira/browse/TINKERPOP-2386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17139940#comment-17139940
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Stephen Mallette commented on TINKERPOP-2386:
---------------------------------------------
gremlin-python uses a trailing underscore for steps that overlap with python
keywords - so {{range()}} is actually {{range_()}}. it looks like that
particular step is not listed in the "Differences" section:
https://tinkerpop.apache.org/docs/current/reference/#gremlin-python-differences
I'll amend that.
> Keyword "range" overlap with Gremlin-Python and Python3
> -------------------------------------------------------
>
> Key: TINKERPOP-2386
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2386
> Project: TinkerPop
> Issue Type: Bug
> Components: python
> Affects Versions: 3.4.7
> Environment: Environment: Ubuntu 18.04.3 LTS VM
> Reporter: Justin Kellogg
> Priority: Minor
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> Using python's range in for loops results in a gremlin error. Example:
>
> {{ for x in range(0,5):}}
> {{ print(x)}}
> If I have gremlin-python imported, I get this error:
> {{Traceback (most recent call last):}}
> {{ File "clusters.py", line 133, in <module>}}
> {{ Run('localhost',8182)}}
> {{ File "clusters.py", line 123, in Run}}
> {{ for x in range(0,5):}}
> {{ File
> "/home/developer/.local/lib/python3.6/site-packages/gremlin_python/process/traversal.py",
> line 48, in __next__}}
> {{ self.traversal_strategies.apply_strategies(self)}}
> {{AttributeError: 'NoneType' object has no attribute 'apply_strategies'}}
>
> Python Version: 3.6.9
>
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