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Hello,

I encountered the problem that although it is stated in the Ammolite documentation that the "select" command is supported as instance method, applying this method to a PyMol object does not return a PyMol object, but a 'NoneType ' object. Here is the sample code:

# Import libraries
from biotite.structure.io.pdb import PDBFile
import numpy as np
import ammolite

ammolite.reset()

# Working on exercise one dealing with the ternary complex between
# Hsp 90, FKBP51 and P23
# Loading the structure into an AtomArray
pdb_file = PDBFile.read("7l7i.pdb")
atom_array = pdb_file.get_structure(
    model=1,
    include_bonds=True
)

# Converting the AtomArray to a PyMol object
pymol_ternary_complex = ammolite.PyMOLObject.from_structure(atom_array)

The variable pymol_ternary_complex stores a ammolite.PyMOLObject, as the following line of code demonstrates:

print(type(pymol_ternary_complex))

If pymol_ternary_complex, however, is used in order to make a selection via PyMol's select command, as shown in the following line of code:

pymol_ternary_complex.select(
    name="fkbp51",
    selection= atom_array.chain_id == "C"
)

the corresponding variable stores an object of type NoneType, raising an AttributeError when trying to perform operations on the selection, such as changing its colour.

Is this really a bug or do I merely have overlooked something in the documentation?

Thanks in advance.

Kind regards