constants# Atoms# ATOM_TYPES Built-in immutable sequence. Bravais Lattices# PEARSON_SYMBOLS BRAVAIS_LATTICE_NAMES BRAVAIS_LATTICE_VARIATIONS Built-in mutable sequence. C_MATRICES K-points# DEFAULT_K_PATHS HS_PLOT_NAMES Numerical# TODEGREES Convert a string or number to a floating point number, if possible. TORADIANS Convert a string or number to a floating point number, if possible.