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For reasons I really do not understand, a REST API I'm using, instead of outputting JSON or XML, uses a peculiar structured text format. In its simplest form SECTION_NAME entry other qualifying bits of the entry entry2 other qualifying bits ... They are not tab-delimited, as the structure may seem, but instead space-delimited, and the qualifying bits may contain words with spaces. The space between SECTION_NAME and the entries is also variable, ranging from 1 to several (6 or more) spaces. Also, one part of the format contains entries in the form SECTION_NAME entry SUB_SECTION more information SUB_SECTION2 more information For reference, an extract of real data (some sections omitted), which shows the use of the structure: ENTRY hsa04064 Pathway NAME NF-kappa B signaling pathway - Homo sapiens (human) DRUG D09347 Fostamatinib (USAN) D09348 Fostamatinib disodium (USAN) D09692 Veliparib (USAN/INN) D09730 Olaparib (JAN/INN) D09913 Iniparib (USAN/INN) REFERENCE PMID:21772278 AUTHORS Oeckinghaus A, Hayden MS, Ghosh S TITLE Crosstalk in NF-kappaB signaling pathways. JOURNAL Nat Immunol 12:695-708 (2011) As I'm trying to parse this weird format into something saner (a dictionary which can then be converted to JSON), I'm unsure on what to do: splitting blindly on spaces causes a mess (it also affects information with spaces), and I'm not sure on how I can figure when a section starts or not. Is text manipulation enough for the job or should I use more sophisticated methods? EDIT: I started using pyparsing for the job, but multiple-line records baffle me, here's an example with DRUG: from pyparsing import * punctuation = ",.'`&-" special_chars = "\()[]" drug = Keyword("DRUG") d

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