[BugFix] Fix broken --sheet-name argument

[hjoaquim]

1. Why? (1-3 sentences or a bullet point list):

   • Broken --sheet-name argument

2. What? (1-3 sentences or a bullet point list):

   • Better handling of results (which may or may not be OBBjects)
   • sheet-name needed to be converted from a list to a string.

3. Impact (1-2 sentences or a bullet point list):

   • Buf fix -> ux improvement.

4. Testing Done:

   • Writing to an Excel with a sheet name: /equity/fundamental/ $ balance --symbol MSFT --period quarter --export msft_financials.x lsx --sheet-name balance
   • Writing to an existing Excel (with another sheet name): /equity/fundamental/ $ cash --symbol MSFT --period quarter --export msft_financials.xlsx --sheet-name cash

5. Reviewer Notes (optional):

   • Never mind the confusion with the number of commits, this was branched off in the wrong place.

[deeleeramone]

When I don't specify sheet-name, I get an error.

cannot access local variable 'sheet_name' where it is not associated with a value

[hjoaquim]

When I don't specify sheet-name, I get an error.

cannot access local variable 'sheet_name' where it is not associated with a value

I believe this fixes: 45bfac2

Thank you @deeleeramone

If it still fails somehow, please share the exact command!

[deeleeramone]

--sheet-name works, on to the next!