pysrw.magnets.PREDEFINED_UNDULATORS# pysrw.magnets.PREDEFINED_UNDULATORS = {'LHC': ['v', -1, 0, 0.28, 1, 4.5]}# Data of known undulators arranged as [‘undPlane’, ‘symmetry’, ‘initialPhase’, ‘undPeriod’, ‘numPer’, ‘magField’].