Hi,
Sorry that we are not very sure what you need.
1. You can specify the book name on new sheet moment, like
wks=op.new_sheet('w', 'hello')
but note that it will try enumeration if there already exists a book named as "hello".
2. the book name does not affect the subsequent load excel action, as long as you have the worksheet object. like
wks=op.new_sheet('w')
f = op.path('e')+r'Samples\Graphing\Excel Data.xls'
wks.from_file(f)
3. If you do need the book name, you can try
wks=op.new_sheet('w')
wb=wks.get_book()
print(wb.name)
wb.name='hello' #rename short name
wb.lname='world' #rename long name