ISA-Tab Export

A shared, reusable ISA-Tab writer plus the MetaboLights submission exporter that wraps it — the export side of the integration bridge.

Shared ISA-Tab writer

from metaseed.isatab import to_isatab

docs = to_isatab(client)   # {"i_Investigation.txt": ..., "s_<study>.txt": ..., "a_<assay>.txt": ...}

to_isatab renders any ISA-shaped metaseed dataset (Investigation → Study → {Person, Publication, Factor, Protocol, Assay}) as ISA-Tab documents: the labeled-section i_Investigation.txt, plus a study file and assay file per study and assay. Pure and dependency-free (stdlib tab-delimited text); files are referenced, never read or written.

Because ISA-Tab is the shared backbone of the isa and metabolights profiles (and FAIRDOM-SEEK, #33), this one writer serves all of them.

MetaboLights export

from metaseed.metabolights import to_metabolights

docs = to_metabolights(client)   # ISA-Tab + one m_*.txt MAF per assay

to_metabolights is to_isatab plus the MetaboLights-specific MAF (Metabolite Assignment File) — a m_*.txt skeleton carrying the standard MAF column header for each assay. So import_accession and to_metabolights round-trip through the metabolights profile.