运行Python脚本出现deepmolecule.rdkit_utils模块缺失错误的解决方法

Hey there, let's work through this error you're hitting. The reason you can't find any public info on deepmolecule.rdkit_utils is because this isn't a widely published package on PyPI or common repositories—it's almost certainly a custom local module tied to the project your script came from, or a private internal library that never got made public. Here's how to fix this:

1. Check for the module in your local files #

• First, look at the folder where your script is saved. Is there a directory named deepmolecule in the same location? Inside that folder, you should see a rdkit_utils.py file (and optionally an __init__.py file, which older Python versions need to recognize it as a valid module).
• If you find this folder but your script still can't access it, add the path to the parent folder of deepmolecule to your Python path at the top of your script:

  import sys
  # Replace with the actual path to the folder holding the deepmolecule directory
  sys.path.append("/path/to/folder/containing/deepmolecule")
  

2. Retrieve the full original project #

• If this script was pulled from a GitHub repo, lab project, or shared codebase, you might have only downloaded the single script file, not the full project. Go back to the source and grab the complete set of files—this should include the missing deepmolecule module directory.

3. Replace the missing function with RDKit's native tools #

If you can't track down the deepmolecule module at all, you can replicate the smile_to_fp function using RDKit's built-in tools (since you're already importing RDKit in your script). Add this drop-in replacement directly to your script:

from rdkit.Chem import AllChem
import numpy as np

def smile_to_fp(smile, radius=2, nBits=2048):
    # Convert SMILES string to RDKit molecule object
    mol = Chem.MolFromSmiles(smile)
    # Handle invalid SMILES (adjust return value based on your script's needs)
    if mol is None:
        return np.zeros(nBits)
    # Generate Morgan fingerprint as a bit vector and convert to numpy array
    fp = AllChem.GetMorganFingerprintAsBitVect(mol, radius, nBits)
    return np.array(fp)

Then delete the line from deepmolecule.rdkit_utils import smile_to_fp—your script will use this custom function instead.

4. Quick typo check #

While unlikely, it's worth confirming the module name isn't a typo. For example, there's a popular cheminformatics library called deepchem, but it doesn't have a rdkit_utils submodule, so this is probably not the issue here—but it never hurts to double-check!

内容的提问来源于stack exchange，提问作者sohyeon