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4 changes: 2 additions & 2 deletions pandas/core/tools/numeric.py
Original file line number Diff line number Diff line change
Expand Up @@ -40,13 +40,13 @@ def to_numeric(arg, errors="raise", downcast=None):
- If 'raise', then invalid parsing will raise an exception.
- If 'coerce', then invalid parsing will be set as NaN.
- If 'ignore', then invalid parsing will return the input.
downcast : {'int', 'signed', 'unsigned', 'float'}, default None
downcast : {'integer', 'signed', 'unsigned', 'float'}, default None
If not None, and if the data has been successfully cast to a
numerical dtype (or if the data was numeric to begin with),
downcast that resulting data to the smallest numerical dtype
possible according to the following rules:

- 'int' or 'signed': smallest signed int dtype (min.: np.int8)
- 'integer' or 'signed': smallest signed int dtype (min.: np.int8)
- 'unsigned': smallest unsigned int dtype (min.: np.uint8)
- 'float': smallest float dtype (min.: np.float32)

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