#key: GKDHNwKre8uiowqhPh

from pymatgen.ext.matproj import MPRester
import json
from pprint import pprint

all_task_id = dict()
mvc_ids = dict()

with MPRester("GKDHNwKre8uiowqhPh") as m:
    for doc in m.query(criteria={}, ["task_ids"]):
        pprint(doc)