feat: Add six new Series methods - #21
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This commit implements the following six methods for the `Series` class: - `cummax` - `cummin` - `cumprod` - `cumsum` - `describe` - `diff` To support the implementation of the `describe` method, this commit also refactors the `Series` and `DataFrame` classes to include a `session` object. This allows for the creation of new `DataFrame` objects from within the `Series` class.
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| def describe(self) -> "Series": | ||
| """Return a Series with descriptive statistics.""" | ||
| stats = { | ||
| "count": self.count(), | ||
| "mean": self.mean(), | ||
| "std": self.std(), | ||
| "min": self.min(), | ||
| "25%": self._data.quantile(0.25).to_pyarrow().as_py(), | ||
| "50%": self._data.quantile(0.50).to_pyarrow().as_py(), | ||
| "75%": self._data.quantile(0.75).to_pyarrow().as_py(), | ||
| "max": self.max(), | ||
| } | ||
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| index = ["count", "mean", "std", "min", "25%", "50%", "75%", "max"] | ||
| pandas_series = pd.Series(stats, name=self.name, index=index) | ||
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| return self._session.DataFrame(pandas_series.to_frame())[self.name] |
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@google-jules-bot Please remove session from the DataFrame and Series constructors. For describe, please return a pandas Series rather than a leanframe Series.
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I have removed session from the DataFrame and Series constructors and updated describe to return a pandas Series.
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This commit implements six new methods for the
Seriesclass, as requested inspecs/2025-09-16-series-methods.md. It also includes a refactoring of theSeriesandDataFrameclasses to support the implementation of thedescribemethod.PR created automatically by Jules for task 10287785780693748555