Hi Navid,

try adding

import rdkit.Chem.Descriptors

before attempting to use MolWt.

Cheers,
p.

On 23/01/2020 17:02, Navid Shervani-Tabar wrote:
Update: I was able to go back to square one. Using RDKit-2019.09.3.0 I still get the error

module 'rdkit.Chem' has no attribute 'Descriptors'

when using Chem.Descriptors.MolWt.

Navid



On Thu, Jan 23, 2020 at 9:37 AM Navid Shervani-Tabar <nshe...@gmail.com <mailto:nshe...@gmail.com>> wrote:

    Hello,

    I was trying to use the MolWt function in RDKit. I tried
    Chem.Descriptors.MolWt but I got

    module 'rdkit.Chem' has no attribute 'Descriptors'

    I thought that might be related to the fact that I used the
    2019.03 version. So I updated using

    conda install -c conda-forge rdkit

    But now when I import

    from rdkit.Chem.QED import qed

    I get

    Process finished with exit code 139 (interrupted by signal 11:
    SIGSEGV)

    Any suggestions how to fix this?

    Thanks!
    Navid




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