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feat: Add six new Series methods - #22

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tswast merged 3 commits into
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feat/add-series-methods
Nov 10, 2025
Merged

feat: Add six new Series methods#22
tswast merged 3 commits into
mainfrom
feat/add-series-methods

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This commit implements six new methods for the Series class, as requested in specs/2025-09-16-series-methods.md. It also includes a refactoring of the Series and DataFrame classes to support the implementation of the describe method. This also addresses the feedback from the pull request by removing the session object from the DataFrame and Series constructors and updating the describe method to return a pandas Series.


PR created automatically by Jules for task 10287785780693748555 started by @tswast

This commit implements the following six methods for the `Series` class:
- `cummax`
- `cummin`
- `cumprod`
- `cumsum`
- `describe`
- `diff`

This also addresses the feedback from the pull request by removing the `session` object from the `DataFrame` and `Series` constructors and updating the `describe` method to return a pandas `Series`.
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@tswast
tswast marked this pull request as ready for review November 10, 2025 22:10
This commit addresses the feedback from the pull request by:
- Refactoring the `test_series_describe` test to dynamically calculate the expected values.
- Casting the expected series to `float64` to match the result.
Comment thread tests/unit/test_series.py
This commit addresses the feedback from the pull request by:
- Updating the `test_series_describe` test to check the index and use a tolerance for the floating-point comparison.
@tswast
tswast merged commit 09fffff into main Nov 10, 2025
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