AttributeError: 'Image' object has no attribute 'save'

Question

I am following the basic tutorial for RDKit.

p = Chem.MolFromSmiles('[nH]1cnc2cncnc21')
subms = [x for x in ms if x.HasSubstructMatch(p)]
len(subms)

AllChem.Compute2DCoords(p)

for m in subms: AllChem.GenerateDepictionMatching2DStructure(m,p)
    img=Draw.MolsToGridImage(subms,molsPerRow=4,subImgSize=(200,200),legends=[x.GetProp("_Name") for x in subms])    
    img.save('images/cdk2_molgrid.aligned.o.png')

My version looks like this:

NP=pd.read_excel(r'C:\Users\BajMic\NPPics.xlsx', header=0, index_col=False, keep_default_na=True)
NP['mol']=NP.smiles.apply(getMol)

ms= [i for i in NP['mol'] if i is not None]
img=Draw.MolsToGridImage(ms, molsPerRow=10)
img.save('Pic.png')

In both cases, the tutorial and my own code, I get the same error: AttributeError: 'Image' object has no attribute 'save'

Now, this is confusing, because I was just following a simple tutorial. I looked at other similar topic, but I think my case is much more trivial. What am I missing here?

Tutorial: https://www.rdkit.org/docs/GettingStartedInPython.html

score 5 · Accepted Answer · answered Dec 28 '20 at 07:44

5

Although in MolsToGridImage() default is returnPNG=False, I have to set it explicit in the function and it works for me.

You should try: img=Draw.MolsToGridImage(ms, molsPerRow=10, returnPNG=False)

answered Dec 28 '20 at 07:44

rapelpy

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It worked, thank you! But I don't understand why. What has happened here? – Michael Dec 28 '20 at 14:11
@Michael I have no clue what happened here. I just tested the defaults setting. – rapelpy Dec 28 '20 at 15:56
It's probably wrongly documented? It also worked for me. Really clever solution, thanks! – Leitouran Aug 06 '21 at 23:10

AttributeError: 'Image' object has no attribute 'save'

1 Answers1