[MRG] Fix build-in CLI extraction to Excel

[ipa-bak]

This PR fixes #372

The calls to the Pandas Excel writer where no longer compatible with recent versions.

• The to_excel() method does not have an "encoding" keyword argument.
• The method to save to file is now called "close" instead of "save".

Tested with the following related package versions:

• openpyxl 3.1.2
• pandas 2.0.1

[ipa-bak]

Hi @foarsitter and @MartinThoma , I saw the discussion in #343 . I f you want me to open this PR against some other fork, let me known. Unfortunately I cannot offer general help with maintaining this project, I am already stretch thin with too many other tasks.

[foarsitter]

@ipa-bak can you confirm that this change is covered in tests.test_cli.test_cli_output_format?

[ipa-bak]

Should be covered by

camelot/tests/test_cli.py

Lines 137 to 142 in e3b9c73

	outfile = os.path.join(tempdir, "health.xlsx")
	result = runner.invoke(
	cli,
	["--format", "excel", "--output", outfile, "stream", infile],
	)
	assert result.exit_code == 0, f"Output: {result.output}"

.
At least that is the case that failed for me without this change and works with this change in.

Note that I did not call it with stream, but with lattice, but that should make zero difference.

[4WvgqJu]

And source code starting at section 598 in file core.py?
I can't see changes at "Files Changend".
I've changed it for myself into:

    def to_excel(self, path, **kwargs):
        """Writes Table to an Excel file.

        For kwargs, check :meth:`pandas.DataFrame.to_excel`.

        Parameters
        ----------
        path : str
            Output filepath.

        """
        kw = {
            "sheet_name": f"page-{self.page}-table-{self.order}"
        }
        '''
        kw = {
            "sheet_name": f"page-{self.page}-table-{self.order}",
            "encoding": "utf-8",
        }
        '''
        kw.update(kwargs)
        writer = pd.ExcelWriter(path)
        self.df.to_excel(writer, **kw)
        writer.close()
        '''
        writer.save()
        ''' 

Br. F.