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https://issues.apache.org/jira/browse/BEAM-3981?focusedWorklogId=99719&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-99719
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ASF GitHub Bot logged work on BEAM-3981:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 08/May/18 20:50
            Start Date: 08/May/18 20:50
    Worklog Time Spent: 10m 
      Work Description: tvalentyn commented on issue #5053: [BEAM-3981] 
Futurize coders subpackage
URL: https://github.com/apache/beam/pull/5053#issuecomment-387538220
 
 
   @RobbeSneyders I think it's fine to make one-off exceptions for 
coders_impl.py, and annotating them with inline exceptions from lint checker 
for the two changes we discussed. We don't expect these kind of exceptions for 
most other parts of codebase, but wanted to do our due diligence on this 
package since it's on critical path.
   
   I agree with you, let's remove the `range()` import. For `iteritems`  how 
about we do something along the lines: 
   
   ```
   if (...python 2...):
     items = dict_value.iteritems()   # no-py3lint: allow iteritems()
   else:
     items = dict_value.items()
   for k,v in items:
   ...
   ```
   I think with these changes we can proceed with the merge, I will do 
benchmarking in parallel and we can clean this up later.

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 99719)
    Time Spent: 16h  (was: 15h 50m)

> Futurize and fix python 2 compatibility for coders package
> ----------------------------------------------------------
>
>                 Key: BEAM-3981
>                 URL: https://issues.apache.org/jira/browse/BEAM-3981
>             Project: Beam
>          Issue Type: Sub-task
>          Components: sdk-py-core
>            Reporter: Robbe
>            Assignee: Robbe
>            Priority: Major
>          Time Spent: 16h
>  Remaining Estimate: 0h
>
> Run automatic conversion with futurize tool on coders subpackage and fix 
> python 2 compatibility. This prepares the subpackage for python 3 support.



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