MAINT: Remove dep on matplotlib

Author: bashtage

pandas-stubs/_typing.pyi

@@ -23,7 +23,6 @@ from typing import (
     Union,
 )
 
-import matplotlib.ticker
 import numpy as np
 from numpy import typing as npt
 from pandas.core.arrays import ExtensionArray
@@ -40,6 +39,8 @@ from pandas._libs.tslibs import (
 
 from pandas.core.dtypes.dtypes import ExtensionDtype
 
+from pandas.io.formats.format import EngFormatter
+
 ArrayLike = Union[ExtensionArray, np.ndarray]
 AnyArrayLike = Union[Index, Series, np.ndarray]
 PythonScalar = Union[str, bool, complex]
@@ -192,7 +193,7 @@ CompressionOptions = Optional[
 FormattersType = Union[
     list[Callable], tuple[Callable, ...], Mapping[Union[str, int], Callable]
 ]
-FloatFormatType = str | Callable | matplotlib.ticker.EngFormatter
+FloatFormatType = str | Callable | EngFormatter
 # converters
 ConvertersArg = dict[Hashable, Callable[[Dtype], Dtype]]
 

pandas-stubs/core/frame.pyi

@@ -1999,7 +1999,7 @@ class DataFrame(NDFrame, OpsMixin):
     def to_string(
         self,
         buf: FilePath | WriteBuffer[str],
-        columns: Sequence[_str] | None = ...,
+        columns: list[HashableT] | Index | Series | None = ...,
         col_space: int | list[int] | dict[HashableT, int] | None = ...,
         header: _bool | list[_str] | tuple[str, ...] = ...,
         index: _bool = ...,
@@ -2022,7 +2022,7 @@ class DataFrame(NDFrame, OpsMixin):
     def to_string(
         self,
         buf: None = ...,
-        columns: Sequence[_str] | None = ...,
+        columns: list[HashableT] | Index | None = ...,
         col_space: int | list[int] | dict[Hashable, int] | None = ...,
         header: _bool | Sequence[_str] = ...,
         index: _bool = ...,