I’m trying to query piezoelectric data from the materials project database. When I do the same thing for the summary, I get a dictionary of all properties I requested, which I convert to a dataframe after. Here’s the code I use:
rester = MPRester(apikey, mute_progress_bars=False, use_document_model=False)
data = rester.materials.summary.search(elements=[‘O’], num_elements=(2, None), fields=[‘material_id’,‘formula_pretty’,“energy_above_hull”, ‘composition’, ‘elements’, ‘shear_modulus’,
‘bulk_modulus’, ‘universal_anisotropy’, ‘homogeneous_poisson’, ‘volume’, ‘density’, ‘elements’, ‘formula_anonymous’, ‘n’])
df_oxide = pd.DataFrame.from_dict(data)
But when I try doing the exact same thing with piezoelectric properties, the program returns a MPDataDoc list, not a dictionary. Here’s the code I use:
df_list=df_oxide[‘material_id’].tolist()
piezo = rester.materials.piezoelectric.search(material_ids=df_list[0:10000], all_fields=True)
What am I doing wrong? Any help is appreciated🙏