matchms.importing.load_from_usi module

matchms.importing.load_from_usi.load_from_usi(usi: str, server: str = 'https://metabolomics-usi.gnps2.org', metadata_harmonization: bool = True) → Spectrum | None[source]

Load spectrum from metabolomics USI.

USI returns JSON data with keys “peaks”, “n_peaks” and “precuror_mz”

from matchms.importing import load_from_usi

spectrum = load_from_usi("mzspec:MASSBANK::accession:SM858102")
print(f"Found spectrum with precursor m/z of {spectrum.get('precursor_mz'):.2f}.")

Parameters:

usi – Provide the usi.
server (string) – USI server
metadata_harmonization (bool, optional) – Set to False if metadata harmonization to default keys is not desired. The default is True.