Replaces everything in code_array from xls_file

def to_code_array(self):
        """Replaces everything in code_array from xls_file"""

        self._xls2shape()

        worksheets = self.workbook.sheet_names()

        for tab, worksheet_name in enumerate(worksheets):
            worksheet = self.workbook.sheet_by_name(worksheet_name)
            self._xls2code(worksheet, tab)
            self._xls2attributes(worksheet, tab)
            self._xls2row_heights(worksheet, tab)
            self._xls2col_widths(worksheet, tab)