Shared dictionary

people = [
    {
       "name" : "Foo",
       "id"   : "1",
    },
    {
       "name" : "Bar",
       "id"   : "2",
    },
    {
       "name" : "Moo",
       "id"   : "3",
    },
]

by_name = {}
by_id = {}
for person in people:
    by_name[ person['name' ] ] = person
    by_id[ person['id' ] ] = person
print(by_name)
print(by_id)
print('-------------------')

print(by_name["Foo"])
by_name["Foo"]['email'] = 'foo@weizmann.ac.il'

people[0]["name"] = "Foooooo";
print(by_name)
print(by_id)

print(by_name["Foo"])  # the key remained Foo !!!!
print(by_id["1"])

{'Foo': {'name': 'Foo', 'id': '1'}, 'Bar': {'name': 'Bar', 'id': '2'}, 'Moo': {'name': 'Moo', 'id': '3'}}
{'1': {'name': 'Foo', 'id': '1'}, '2': {'name': 'Bar', 'id': '2'}, '3': {'name': 'Moo', 'id': '3'}}
-------------------
{'name': 'Foo', 'id': '1'}
{'Foo': {'name': 'Foooooo', 'id': '1', 'email': 'foo@weizmann.ac.il'}, 'Bar': {'name': 'Bar', 'id': '2'}, 'Moo': {'name': 'Moo', 'id': '3'}}
{'1': {'name': 'Foooooo', 'id': '1', 'email': 'foo@weizmann.ac.il'}, '2': {'name': 'Bar', 'id': '2'}, '3': {'name': 'Moo', 'id': '3'}}
{'name': 'Foooooo', 'id': '1', 'email': 'foo@weizmann.ac.il'}
{'name': 'Foooooo', 'id': '1', 'email': 'foo@weizmann.ac.il'}