TYP: Annotate plotting stacker

pandas/plotting/_matplotlib/boxplot.py

@@ -1,4 +1,5 @@
 from collections import namedtuple
+from typing import TYPE_CHECKING
 import warnings
 
 from matplotlib.artist import setp
@@ -14,6 +15,9 @@
 from pandas.plotting._matplotlib.style import _get_standard_colors
 from pandas.plotting._matplotlib.tools import _flatten, _subplots
 
+if TYPE_CHECKING:
+    from matplotlib.axes import Axes
+
 
 class BoxPlot(LinePlot):
     _kind = "box"
@@ -150,7 +154,7 @@ def _make_plot(self):
                 labels = [pprint_thing(key) for key in range(len(labels))]
             self._set_ticklabels(ax, labels)
 
-    def _set_ticklabels(self, ax, labels):
+    def _set_ticklabels(self, ax: "Axes", labels):
         if self.orientation == "vertical":
             ax.set_xticklabels(labels)
         else:
@@ -292,7 +296,7 @@ def maybe_color_bp(bp, **kwds):
         if not kwds.get("capprops"):
             setp(bp["caps"], color=colors[3], alpha=1)
 
-    def plot_group(keys, values, ax):
+    def plot_group(keys, values, ax: "Axes"):
         keys = [pprint_thing(x) for x in keys]
         values = [np.asarray(remove_na_arraylike(v), dtype=object) for v in values]
         bp = ax.boxplot(values, **kwds)

pandas/plotting/_matplotlib/core.py

@@ -1,5 +1,5 @@
 import re
-from typing import TYPE_CHECKING, List, Optional
+from typing import TYPE_CHECKING, List, Optional, Tuple
 import warnings
 
 from matplotlib.artist import Artist
@@ -45,6 +45,7 @@
 
 if TYPE_CHECKING:
     from matplotlib.axes import Axes
+    from matplotlib.axis import Axis
 
 
 class MPLPlot:
@@ -68,16 +69,10 @@ def _kind(self):
     _pop_attributes = [
         "label",
         "style",
-        "logy",
-        "logx",
-        "loglog",
         "mark_right",
         "stacked",
     ]
     _attr_defaults = {
-        "logy": False,
-        "logx": False,
-        "loglog": False,
         "mark_right": True,
         "stacked": False,
     }
@@ -167,6 +162,9 @@ def __init__(
         self.legend_handles: List[Artist] = []
         self.legend_labels: List[Label] = []
 
+        self.logx = kwds.pop("logx", False)
+        self.logy = kwds.pop("logy", False)
+        self.loglog = kwds.pop("loglog", False)
         for attr in self._pop_attributes:
             value = kwds.pop(attr, self._attr_defaults.get(attr, None))
             setattr(self, attr, value)
@@ -283,11 +281,11 @@ def generate(self):
     def _args_adjust(self):
         pass
 
-    def _has_plotted_object(self, ax):
+    def _has_plotted_object(self, ax: "Axes") -> bool:
         """check whether ax has data"""
         return len(ax.lines) != 0 or len(ax.artists) != 0 or len(ax.containers) != 0
 
-    def _maybe_right_yaxis(self, ax, axes_num):
+    def _maybe_right_yaxis(self, ax: "Axes", axes_num):
         if not self.on_right(axes_num):
             # secondary axes may be passed via ax kw
             return self._get_ax_layer(ax)
@@ -523,7 +521,7 @@ def _adorn_subplots(self):
                     raise ValueError(msg)
                 self.axes[0].set_title(self.title)
 
-    def _apply_axis_properties(self, axis, rot=None, fontsize=None):
+    def _apply_axis_properties(self, axis: "Axis", rot=None, fontsize=None):
         """
         Tick creation within matplotlib is reasonably expensive and is
         internally deferred until accessed as Ticks are created/destroyed
@@ -540,7 +538,7 @@ def _apply_axis_properties(self, axis, rot=None, fontsize=None):
                     label.set_fontsize(fontsize)
 
     @property
-    def legend_title(self):
+    def legend_title(self) -> Optional[str]:
         if not isinstance(self.data.columns, ABCMultiIndex):
             name = self.data.columns.name
             if name is not None:
@@ -591,7 +589,7 @@ def _make_legend(self):
                 if ax.get_visible():
                     ax.legend(loc="best")
 
-    def _get_ax_legend_handle(self, ax):
+    def _get_ax_legend_handle(self, ax: "Axes"):
         """
         Take in axes and return ax, legend and handle under different scenarios
         """
@@ -616,7 +614,7 @@ def plt(self):
 
     _need_to_set_index = False
 
-    def _get_xticks(self, convert_period=False):
+    def _get_xticks(self, convert_period: bool = False):
         index = self.data.index
         is_datetype = index.inferred_type in ("datetime", "date", "datetime64", "time")
 
@@ -646,7 +644,7 @@ def _get_xticks(self, convert_period=False):
 
     @classmethod
     @register_pandas_matplotlib_converters
-    def _plot(cls, ax, x, y, style=None, is_errorbar=False, **kwds):
+    def _plot(cls, ax: "Axes", x, y, style=None, is_errorbar: bool = False, **kwds):
         mask = isna(y)
         if mask.any():
             y = np.ma.array(y)
@@ -667,10 +665,10 @@ def _plot(cls, ax, x, y, style=None, is_errorbar=False, **kwds):
             if style is not None:
                 args = (x, y, style)
             else:
-                args = (x, y)
+                args = (x, y)  # type:ignore
             return ax.plot(*args, **kwds)
 
-    def _get_index_name(self):
+    def _get_index_name(self) -> Optional[str]:
         if isinstance(self.data.index, ABCMultiIndex):
             name = self.data.index.names
             if com.any_not_none(*name):
@@ -877,7 +875,7 @@ def _get_subplots(self):
             ax for ax in self.axes[0].get_figure().get_axes() if isinstance(ax, Subplot)
         ]
 
-    def _get_axes_layout(self):
+    def _get_axes_layout(self) -> Tuple[int, int]:
         axes = self._get_subplots()
         x_set = set()
         y_set = set()
@@ -916,15 +914,15 @@ def __init__(self, data, x, y, **kwargs):
         self.y = y
 
     @property
-    def nseries(self):
+    def nseries(self) -> int:
         return 1
 
-    def _post_plot_logic(self, ax, data):
+    def _post_plot_logic(self, ax: "Axes", data):
         x, y = self.x, self.y
         ax.set_ylabel(pprint_thing(y))
         ax.set_xlabel(pprint_thing(x))
 
-    def _plot_colorbar(self, ax, **kwds):
+    def _plot_colorbar(self, ax: "Axes", **kwds):
         # Addresses issues #10611 and #10678:
         # When plotting scatterplots and hexbinplots in IPython
         # inline backend the colorbar axis height tends not to
@@ -1080,7 +1078,7 @@ def __init__(self, data, **kwargs):
         if "x_compat" in self.kwds:
             self.x_compat = bool(self.kwds.pop("x_compat"))
 
-    def _is_ts_plot(self):
+    def _is_ts_plot(self) -> bool:
         # this is slightly deceptive
         return not self.x_compat and self.use_index and self._use_dynamic_x()
 
@@ -1139,7 +1137,9 @@ def _make_plot(self):
                 ax.set_xlim(left, right)
 
     @classmethod
-    def _plot(cls, ax, x, y, style=None, column_num=None, stacking_id=None, **kwds):
+    def _plot(
+        cls, ax: "Axes", x, y, style=None, column_num=None, stacking_id=None, **kwds
+    ):
         # column_num is used to get the target column from plotf in line and
         # area plots
         if column_num == 0:
@@ -1183,7 +1183,7 @@ def _get_stacking_id(self):
             return None
 
     @classmethod
-    def _initialize_stacker(cls, ax, stacking_id, n):
+    def _initialize_stacker(cls, ax: "Axes", stacking_id, n: int):
         if stacking_id is None:
             return
         if not hasattr(ax, "_stacker_pos_prior"):
@@ -1194,7 +1194,7 @@ def _initialize_stacker(cls, ax, stacking_id, n):
         ax._stacker_neg_prior[stacking_id] = np.zeros(n)
 
     @classmethod
-    def _get_stacked_values(cls, ax, stacking_id, values, label):
+    def _get_stacked_values(cls, ax: "Axes", stacking_id, values, label):
         if stacking_id is None:
             return values
         if not hasattr(ax, "_stacker_pos_prior"):
@@ -1213,15 +1213,15 @@ def _get_stacked_values(cls, ax, stacking_id, values, label):
         )
 
     @classmethod
-    def _update_stacker(cls, ax, stacking_id, values):
+    def _update_stacker(cls, ax: "Axes", stacking_id, values):
         if stacking_id is None:
             return
         if (values >= 0).all():
             ax._stacker_pos_prior[stacking_id] += values
         elif (values <= 0).all():
             ax._stacker_neg_prior[stacking_id] += values
 
-    def _post_plot_logic(self, ax, data):
+    def _post_plot_logic(self, ax: "Axes", data):
         from matplotlib.ticker import FixedLocator
 
         def get_label(i):
@@ -1276,7 +1276,7 @@ def __init__(self, data, **kwargs):
     @classmethod
     def _plot(
         cls,
-        ax,
+        ax: "Axes",
         x,
         y,
         style=None,
@@ -1318,7 +1318,7 @@ def _plot(
         res = [rect]
         return res
 
-    def _post_plot_logic(self, ax, data):
+    def _post_plot_logic(self, ax: "Axes", data):
         LinePlot._post_plot_logic(self, ax, data)
 
         if self.ylim is None:
@@ -1372,7 +1372,7 @@ def _args_adjust(self):
             self.left = np.array(self.left)
 
     @classmethod
-    def _plot(cls, ax, x, y, w, start=0, log=False, **kwds):
+    def _plot(cls, ax: "Axes", x, y, w, start=0, log=False, **kwds):
         return ax.bar(x, y, w, bottom=start, log=log, **kwds)
 
     @property
@@ -1454,7 +1454,7 @@ def _make_plot(self):
                 )
             self._add_legend_handle(rect, label, index=i)
 
-    def _post_plot_logic(self, ax, data):
+    def _post_plot_logic(self, ax: "Axes", data):
         if self.use_index:
             str_index = [pprint_thing(key) for key in data.index]
         else:
@@ -1466,7 +1466,7 @@ def _post_plot_logic(self, ax, data):
 
         self._decorate_ticks(ax, name, str_index, s_edge, e_edge)
 
-    def _decorate_ticks(self, ax, name, ticklabels, start_edge, end_edge):
+    def _decorate_ticks(self, ax: "Axes", name, ticklabels, start_edge, end_edge):
         ax.set_xlim((start_edge, end_edge))
 
         if self.xticks is not None:
@@ -1489,10 +1489,10 @@ def _start_base(self):
         return self.left
 
     @classmethod
-    def _plot(cls, ax, x, y, w, start=0, log=False, **kwds):
+    def _plot(cls, ax: "Axes", x, y, w, start=0, log=False, **kwds):
         return ax.barh(x, y, w, left=start, log=log, **kwds)
 
-    def _decorate_ticks(self, ax, name, ticklabels, start_edge, end_edge):
+    def _decorate_ticks(self, ax: "Axes", name, ticklabels, start_edge, end_edge):
         # horizontal bars
         ax.set_ylim((start_edge, end_edge))
         ax.set_yticks(self.tick_pos)

pandas/plotting/_matplotlib/hist.py

@@ -1,3 +1,5 @@
+from typing import TYPE_CHECKING
+
 import numpy as np
 
 from pandas.core.dtypes.common import is_integer, is_list_like
@@ -8,6 +10,9 @@
 from pandas.plotting._matplotlib.core import LinePlot, MPLPlot
 from pandas.plotting._matplotlib.tools import _flatten, _set_ticks_props, _subplots
 
+if TYPE_CHECKING:
+    from matplotlib.axes import Axes
+
 
 class HistPlot(LinePlot):
     _kind = "hist"
@@ -90,7 +95,7 @@ def _make_plot_keywords(self, kwds, y):
         kwds["bins"] = self.bins
         return kwds
 
-    def _post_plot_logic(self, ax, data):
+    def _post_plot_logic(self, ax: "Axes", data):
         if self.orientation == "horizontal":
             ax.set_xlabel("Frequency")
         else: