python remove duplicates from list of dict
# set the dict to a tuple for hashability, then use {} for set literal and retrn each item to dict.
[dict(t) for t in {tuple(d.items()) for d in l}]
# using two maps()
list(map(lambda t: dict(t), set(list(map(lambda d: tuple(d.items()), l)))))python dict remove duplicates where name are not the same
import itertools
mylist = [{'x':2020 , 'y':20},{'x':2020 , 'y':30},{'x':2021 , 'y':10},{'x':2021 , 'y':5}]
mylist1=[]
for key, group in itertools.groupby(mylist,lambda x:x["x"]):
max_y=0
for thing in group:
max_y=max(max_y,thing["y"])
mylist1.append({"x":key,"y":max_y})
print(mylist1)create dictionary without removing duplicates from dataframe
df.groupby(level=0).apply(lambda x: x.to_dict('r')).to_dict()
# {'bob': [{'age': 20, 'name': 'bob'}, {'age': 30, 'name': 'bob'}],
# 'jim': [{'age': 25, 'name': 'jim'}]}Copyright © 2021 Codeinu
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