remove underline from hyperlink in excel

[SriMekala]

Hi,
I insert hyperlink in excel using python, the code is below:
dsip_item='7/12'

worksheet.write_string('A1', 'http://www.python.org/')
worksheet.write_url('A1', r'D:/data/DataCheck.xlsx',string=dsip_item)

but I want to remove the underline from the hyperlink.