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I have generated a list of smiles strings and defined them as 'result'

I'd like to convert each SMILES string in the list to separate mol files using RDKit. My current code is this:

m = Chem.MolFromSmiles('result')
print(Chem.MolToMolBlock(m))

This script does not work and returns:

ArgumentError: Python argument types in
rdkit.Chem.rdmolfiles.MolToMolBlock(NoneType) did not match C++ signature:
MolToMolBlock(RDKit::ROMol mol, bool includeStereo=True, int confId=-1, bool kekulize=True, bool forceV3000=False)

How would I go about correcting this?

Thanks!

You converted the string 'result' to a RDKit mol object. And this could not not be transformed to a Molblock.
Variable names are not strings, so don't use them with quotes.

First you have to convert the SMILES one by one to mol objects.

from rdkit import Chem
result = ['C', 'CC', 'CCC']
mo = [Chem.MolFromSmiles(r) for r in result]

Then you can print the Molblocks one by one.

for m in mo:
 print(Chem.MolToMolBlock(m))

That will give you this:

 RDKit 2D

 1 0 0 0 0 0 0 0 0 0999 V2000
 0.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
M END


 RDKit 2D

 2 1 0 0 0 0 0 0 0 0999 V2000
 0.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
 1.2990 0.7500 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
 1 2 1 0
M END


 RDKit 2D

 3 2 0 0 0 0 0 0 0 0999 V2000
 0.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
 1.2990 0.7500 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
 2.5981 -0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
 1 2 1 0
 2 3 1 0
M END