Fixing bug that made reusing the previous plot for dataframes

Author: Marc Garcia

pandas/plotting/_core.py

@@ -215,6 +215,9 @@ def __call__(self, *args, **kwargs):
         plot_backend = _get_plot_backend()
         data = self._parent.copy()
 
+        if isinstance(data, pandas.core.dtypes.generic.ABCSeries):
+            kwargs['new_plot'] = True
+
         if kind in self._dataframe_kinds:
             if isinstance(data, ABCDataFrame):
                 return plot_backend.plot(data, x=x, y=y, kind=kind, **kwargs)

pandas/plotting/_matplotlib/__init__.py

@@ -2,8 +2,6 @@
 
 from pandas._config import get_option
 
-import pandas
-
 from pandas.plotting._matplotlib.boxplot import (
     BoxPlot, boxplot, boxplot_frame, boxplot_frame_groupby)
 from pandas.plotting._matplotlib.converter import deregister, register
@@ -33,7 +31,7 @@
 
 
 def plot(data, kind, **kwargs):
-    if isinstance(data, pandas.core.dtypes.generic.ABCSeries):
+    if kwargs.pop('new_plot', False):
         ax = kwargs.get('ax')
         if ax is None and len(plt.get_fignums()) > 0:
             with plt.rc_context():