Issue Running Example with Automartini_M3

[ksy141]

Hello,

Thank you for providing the detailed installation and usage instructions for Automartini_M3. I was able to install Automartini_M3 and activate the conda environment without any problems. However, when I tried running one of the examples, I encountered the following issue (see below).
Any guidance would be greatly appreciated. For context, I’m working on a MacBook Pro and have confirmed that lxml is installed, though I’m not sure if the error is related to it.

> conda activate automartiniM3
> python -m auto_martiniM3 --smi "CC(=O)OC1=CC=CC=C1C(=O)O" --mol ASP
Traceback (most recent call last):
  File "/Users/siyoungkim/miniconda3/envs/automartiniM3/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/Users/siyoungkim/miniconda3/envs/automartiniM3/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/Users/siyoungkim/miniconda3/envs/automartiniM3/lib/python3.8/site-packages/auto_martiniM3/__main__.py", line 128, in <module>
    cg = solver.Cg_molecule(mol, smiles, args.molname, args.simple_model, topname, bartenderfname, args.bartender_output, args.logp, args.forcepred)
  File "/Users/siyoungkim/miniconda3/envs/automartiniM3/lib/python3.8/site-packages/auto_martiniM3/solver.py", line 232, in __init__
    if not check_additivity(forcepred, bead_types, molecule, mol_smi):
  File "/Users/siyoungkim/miniconda3/envs/automartiniM3/lib/python3.8/site-packages/auto_martiniM3/solver.py", line 70, in check_additivity
    whole_mol_dg,_ = topology.smi2alogps(forcepred, mol_smi, wc_log_p, "MOL",None,None,True) # AutoM3 change : None,None=converted_smi, real_smi not needed here
  File "/Users/siyoungkim/miniconda3/envs/automartiniM3/lib/python3.8/site-packages/auto_martiniM3/topology.py", line 1401, in smi2alogps
    doc = BeautifulSoup(req.content, "lxml")
  File "/Users/siyoungkim/miniconda3/envs/automartiniM3/lib/python3.8/site-packages/bs4/__init__.py", line 366, in __init__
    raise FeatureNotFound(
bs4.exceptions.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml. Do you need to install a parser library?

Thanks!