CLN: Move to_excel to generic.py (pandas-dev#23656)

Author: gfyoung

pandas/core/frame.py

@@ -1829,24 +1829,6 @@ def to_panel(self):
 
         return self._constructor_expanddim(new_mgr)
 
-    @Appender(_shared_docs['to_excel'] % _shared_doc_kwargs)
-    def to_excel(self, excel_writer, sheet_name='Sheet1', na_rep='',
-                 float_format=None, columns=None, header=True, index=True,
-                 index_label=None, startrow=0, startcol=0, engine=None,
-                 merge_cells=True, encoding=None, inf_rep='inf', verbose=True,
-                 freeze_panes=None):
-
-        from pandas.io.formats.excel import ExcelFormatter
-        formatter = ExcelFormatter(self, na_rep=na_rep, cols=columns,
-                                   header=header,
-                                   float_format=float_format, index=index,
-                                   index_label=index_label,
-                                   merge_cells=merge_cells,
-                                   inf_rep=inf_rep)
-        formatter.write(excel_writer, sheet_name=sheet_name, startrow=startrow,
-                        startcol=startcol, freeze_panes=freeze_panes,
-                        engine=engine)
-
     @deprecate_kwarg(old_arg_name='encoding', new_arg_name=None)
     def to_stata(self, fname, convert_dates=None, write_index=True,
                  encoding="latin-1", byteorder=None, time_stamp=None,

pandas/core/generic.py

@@ -1977,16 +1977,17 @@ def _repr_latex_(self):
     # I/O Methods
 
     _shared_docs['to_excel'] = """
-    Write %(klass)s to an excel sheet.
+    Write %(klass)s to an Excel sheet.
 
-    To write a single %(klass)s to an excel .xlsx file it is only necessary to
+    To write a single %(klass)s to an Excel .xlsx file it is only necessary to
     specify a target file name. To write to multiple sheets it is necessary to
     create an `ExcelWriter` object with a target file name, and specify a sheet
-    in the file to write to. Multiple sheets may be written to by
-    specifying unique `sheet_name`. With all data written to the file it is
-    necessary to save the changes. Note that creating an ExcelWriter object
-    with a file name that already exists will result in the contents of the
-    existing file being erased.
+    in the file to write to.
+
+    Multiple sheets may be written to by specifying unique `sheet_name`.
+    With all data written to the file it is necessary to save the changes.
+    Note that creating an `ExcelWriter` object with a file name that already
+    exists will result in the contents of the existing file being erased.
 
     Parameters
     ----------
@@ -9951,6 +9952,25 @@ def to_csv(self, path_or_buf=None, sep=",", na_rep='', float_format=None,
         if path_or_buf is None:
             return formatter.path_or_buf.getvalue()
 
+    @Appender(_shared_docs["to_excel"] % dict(klass="object"))
+    def to_excel(self, excel_writer, sheet_name="Sheet1", na_rep="",
+                 float_format=None, columns=None, header=True, index=True,
+                 index_label=None, startrow=0, startcol=0, engine=None,
+                 merge_cells=True, encoding=None, inf_rep="inf", verbose=True,
+                 freeze_panes=None):
+        df = self if isinstance(self, ABCDataFrame) else self.to_frame()
+
+        from pandas.io.formats.excel import ExcelFormatter
+        formatter = ExcelFormatter(df, na_rep=na_rep, cols=columns,
+                                   header=header,
+                                   float_format=float_format, index=index,
+                                   index_label=index_label,
+                                   merge_cells=merge_cells,
+                                   inf_rep=inf_rep)
+        formatter.write(excel_writer, sheet_name=sheet_name, startrow=startrow,
+                        startcol=startcol, freeze_panes=freeze_panes,
+                        engine=engine)
+
 
 def _doc_parms(cls):
     """Return a tuple of the doc parms."""

pandas/core/series.py

@@ -3970,19 +3970,6 @@ def to_csv(self, *args, **kwargs):
             kwargs["header"] = False  # Backwards compatibility.
         return self.to_frame().to_csv(**kwargs)
 
-    @Appender(generic._shared_docs['to_excel'] % _shared_doc_kwargs)
-    def to_excel(self, excel_writer, sheet_name='Sheet1', na_rep='',
-                 float_format=None, columns=None, header=True, index=True,
-                 index_label=None, startrow=0, startcol=0, engine=None,
-                 merge_cells=True, encoding=None, inf_rep='inf', verbose=True):
-        df = self.to_frame()
-        df.to_excel(excel_writer=excel_writer, sheet_name=sheet_name,
-                    na_rep=na_rep, float_format=float_format, columns=columns,
-                    header=header, index=index, index_label=index_label,
-                    startrow=startrow, startcol=startcol, engine=engine,
-                    merge_cells=merge_cells, encoding=encoding,
-                    inf_rep=inf_rep, verbose=verbose)
-
     @Appender(generic._shared_docs['isna'] % _shared_doc_kwargs)
     def isna(self):
         return super(Series, self).isna()