List all materials in an IFC file

extract_materials.py

import sys
import os
import ifcopenshell

def main():
    args = sys.argv
    if os.path.isfile(args[1]):
        ifc_file = ifcopenshell.open(args[1])
    else:
        return

    print(ifc_file.wrapped_data.header.file_name.name)
    materials = ifc_file.by_type('IfcMaterial')
    for m in materials:
        print(m[0])

if __name__ == "__main__":
    main()