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https://issues.apache.org/jira/browse/BEAM-7746?focusedWorklogId=437879&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-437879
 ]

ASF GitHub Bot logged work on BEAM-7746:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 27/May/20 16:09
            Start Date: 27/May/20 16:09
    Worklog Time Spent: 10m 
      Work Description: chadrik commented on a change in pull request #11632:
URL: https://github.com/apache/beam/pull/11632#discussion_r431264152



##########
File path: sdks/python/apache_beam/dataframe/convert.py
##########
@@ -17,12 +17,20 @@
 from __future__ import absolute_import
 
 import inspect
+from typing import Any

Review comment:
       ```suggestion
   from typing import TYPE_CHECKING
   from typing import Any
   ```

##########
File path: sdks/python/apache_beam/dataframe/convert.py
##########
@@ -17,12 +17,20 @@
 from __future__ import absolute_import
 
 import inspect
+from typing import Any
+from typing import Dict
+from typing import Tuple
+from typing import Union
 
 from apache_beam import pvalue
 from apache_beam.dataframe import expressions
 from apache_beam.dataframe import frame_base
 from apache_beam.dataframe import transforms
 
+if typing.TYPE_CHECKING:

Review comment:
       ```suggestion
   if TYPE_CHECKING:
   ```
   
   




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

    Worklog Id:     (was: 437879)
    Time Spent: 84h 40m  (was: 84.5h)

> Add type hints to python code
> -----------------------------
>
>                 Key: BEAM-7746
>                 URL: https://issues.apache.org/jira/browse/BEAM-7746
>             Project: Beam
>          Issue Type: New Feature
>          Components: sdk-py-core
>            Reporter: Chad Dombrova
>            Assignee: Chad Dombrova
>            Priority: P2
>          Time Spent: 84h 40m
>  Remaining Estimate: 0h
>
> As a developer of the beam source code, I would like the code to use pep484 
> type hints so that I can clearly see what types are required, get completion 
> in my IDE, and enforce code correctness via a static analyzer like mypy.
> This may be considered a precursor to BEAM-7060
> Work has been started here:  [https://github.com/apache/beam/pull/9056]
>  
>  



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