matchms.importing.load_from_mzml module

matchms.importing.load_from_mzml.load_from_mzml(filename: str | Path, ms_level: int = 2, metadata_harmonization: bool = True) → Generator[Spectrum, None, None][source]

Load spectrum(s) from mzml file.

This function will create ~matchms.Spectrum for every spectrum of desired ms_level found in a given MzML file. For more extensive parsing options consider using pyteomics or pymzml packages.

Example:

from matchms.importing import load_from_mzml

file_mzml = "testdata.mzml"
spectra = list(load_from_mzml(file_mzml))
Parameters:

  • filename – Filename for mzml file to import.

  • ms_level – Specify which ms level to import. Default is 2.

  • metadata_harmonization (bool, optional) – Set to False if metadata harmonization to default keys is not desired. The default is True.