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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_wbfmt(self, data_nt=None):
 """Return format for text cell."""

        if data_nt is None or self.b_plain:
            return self.fmtname2wbfmtobj.get('plain')
        # User namedtuple field/value for color
        if self.ntfld_wbfmt is not None:
            return self.__get_wbfmt_usrfld(data_nt)
        # namedtuple format_txt for color/bold/border
        if self.b_format_txt:
            wbfmt = self.__get_wbfmt_format_txt(data_nt)
            if wbfmt is not None:
                return wbfmt
        # 'ntfld_wbfmt': namedtuple field which contains a value used as a key for a xlsx format
        # 'ntval2wbfmtdict': namedtuple value and corresponding xlsx format dict.
        return self.fmtname2wbfmtobj.get('plain')