SECFP bulk functions do not work in Python

[j-adamczyk]

Describe the bug

EncodeSECFPMolsBulk function (docs throws the following error:

TypeError: No to_python (by-value) converter found for C++ type: std::vector<ExplicitBitVect, std::allocator<ExplicitBitVect> >

This always happens for me, for any input. EncodeSECFPMols in a loop works. In particular, this example Jupyter Notebook from UGM 2020 featuring SECFP also works for single molecules, but not in bulk version.

The same happens for SMILES-based bulk function for SECFP.

To Reproduce

Use this function for any number of molecules in Python.

Configuration (please complete the following information):

• RDKit version: 2023.9.5
• OS: Ubuntu 22.04
• Python version (if relevant): 3.11
• Are you using conda? no
• If you are not using conda: how did you install the RDKit? pip