[jira] [Commented] (FLINK-3993) [py] Add generateSequence() support to Python API

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-3993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15309918#comment-15309918 ] 

ASF GitHub Bot commented on FLINK-3993:
---------------------------------------

Github user omaralvarez commented on the pull request:

    https://github.com/apache/flink/pull/2055
  
    I think, everything should be ready now. Although while performing testing, I have found something that I think is not ideal.
    
    If we use this code:
    
    ```python
    env.generate_sequence(1, 5)\
             .map(Id()).map_partition(Verify([1,2,3,4], "Sequence")).output()
    ``` 
    
    The Verify() function will error out with `IndexError: list index out of range`, this is not ideal, since it should raise a Flink testing exception. I could also try to fix this if needed.


> [py] Add generateSequence() support to Python API
> -------------------------------------------------
>
>                 Key: FLINK-3993
>                 URL: https://issues.apache.org/jira/browse/FLINK-3993
>             Project: Flink
>          Issue Type: Improvement
>          Components: Python API
>    Affects Versions: 1.0.3
>            Reporter: Omar Alvarez
>            Priority: Minor
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> Right now, I believe that there is only from_elements() support in order to create a sequence of numbers. It is interesting to be able to create a list of numbers from the Python API also, apart from the Java API. It would not be complicated, since we already have generateSequence(). I am already working on this, and will create a pull request shortly in Github.



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