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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 _parseDataDirectoryExport(self, data, dataDirectoryEntry, exportSection):
 """Parses the EmportDataDirectory and returns an instance of ExportDirectoryData"""

        if not exportSection:
            return
        functions = []
        export_directory = IMAGE_EXPORT_DIRECTORY.from_buffer(exportSection.raw, to_offset(dataDirectoryEntry.VirtualAddress, exportSection))
        offset = to_offset(export_directory.Name, exportSection)

        checkOffset(offset, exportSection)
        name = get_str(exportSection.raw, offset)

        offsetOfNames = to_offset(export_directory.AddressOfNames, exportSection)
        offsetOfAddress = to_offset(export_directory.AddressOfFunctions, exportSection)
        offsetOfNameOrdinals = to_offset(export_directory.AddressOfNameOrdinals, exportSection)
        for i in range(export_directory.NumberOfNames):
            name_address = c_uint.from_buffer(exportSection.raw, offsetOfNames).value
            name_offset = to_offset(name_address, exportSection)

            checkOffset(name_offset, exportSection)
            func_name = get_str(exportSection.raw, name_offset)
            ordinal = c_ushort.from_buffer(exportSection.raw, offsetOfNameOrdinals).value
            func_addr = c_uint.from_buffer(exportSection.raw, offsetOfAddress).value

            offsetOfNames += 4
            offsetOfAddress += 4
            offsetOfNameOrdinals += 2
            functions.append(FunctionData(name=func_name, rva=func_addr, ordinal=ordinal))

        return ExportDirectoryData(header=export_directory, name=name, functions=functions)