I am looking to import an excel file and a particular sheet within the file called 'Cover sheet'. How can I insure that if the sheet name is misspelt, e.g. 'Cover sheet ' (there is an extra space there), then the correct sheet is still selected?

This is what I have at the moment:

```
df.pd.read_excel('../blabla/bla.xlsx', sheetname='Cover sheet')

```