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A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning tasks.
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[python-package] remove unused fallback code in _pandas_to_numpy #7444

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jameslamb opened 2:14am on September 22, 2026 wants to merge 20 Ξ” into microsoft/lightgbm main from
python/misc-cleanups
jameslamb
microsoft/lightgbm
python/misc-cleanups
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20
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Classified as:  General

jameslamb's Description of Work

Contributes to #7031

The Python package's minimum pandas floor is >=1.3.4:

https://github.com/lightgbm-org/LightGBM/blob/a0afb85496b1f483710d2a861330321eab794fff/python-package/pyproject.toml#L47-L50

This removes a fallback that was only needed for pandas>=1.0,<1.2.

cc @maxzw for visibility

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