paper-xlsxAPI referencedescriptors.serialisableopenpyxl.descriptors.serialisablepaper-xlsx 0.2.1 API referenceCopy MarkdownOpen KEYWORDS attributeKEYWORDS= frozenset(kwlist) seq_types attributeseq_types= (list, tuple) ClassSerialisableValueSequencepaper-xlsx 0.2.1 API referenceSerialisablepaper-xlsx 0.2.1 API reference