import win32com.client

book = win32com.client.Dispatch("Excel.Application")
book.Visible = 1
book.Workbooks.Add()

xlBook = book.Workbooks(1)
xlSheet = book.Sheets(1)


for i in xrange(len(book.Sheets)):
    book.Sheets[i].Name = "Hello (%i)" % i

xlSheet.Cells(1,1).Value = "Python Rules!"