Python create list of dicts
Question:
I am new to python and I am trying to construct data structure from existing data.
I have following:
[
{'UserName': 'aaa', 'AccessKeyId': 'AKIAYWQTISJD6X27YVK', 'Status': 'Active', 'CreateDate': datetime.datetime(2022, 9, 8, 15, 56, 39, tzinfo=tzutc())},
{'UserName': 'eee', 'AccessKeyId': 'AKIAYWQTISJD6QXMAKY', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 12, 30, 59, tzinfo=tzutc())},
{'UserName': 'eee', 'AccessKeyId': 'AKIAYWQTISJDUARK6FV', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 16, 58, 38, tzinfo=tzutc())}
]
I need to get this:
{
"aaa": [
{'AccessKeyId': 'AKIAYWQTISJD6X27YVK', 'Status': 'Active', 'CreateDate': datetime.datetime(2022, 9, 8, 15, 56, 39, tzinfo=tzutc())}],
"eee": [
{'AccessKeyId': 'AKIAYWQTISJD6QXMAKY', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 12, 30, 59, tzinfo=tzutc())},
{'AccessKeyId': 'AKIAYWQTISJDUARK6FV', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 16, 58, 38, tzinfo=tzutc())}
]
}
I tried following:
list_per_user = {i['UserName']: copy.deepcopy(i) for i in key_list}
for obj in list_per_user:
del list_per_user[obj]['UserName']
but I am missing array here. So in case of two keys per user I will have only last one with this. I don’t know how to get the list I need per user.
Thanks!
Answers:
Create an external dict that maps username -> list of entries.
data = [
{'UserName': 'aaa', 'AccessKeyId': 'AKIAYWQTISJD6X27YVK', 'Status': 'Active', 'CreateDate': datetime.datetime(2022, 9, 8, 15, 56, 39, tzinfo=tzutc())},
{'UserName': 'eee', 'AccessKeyId': 'AKIAYWQTISJD6QXMAKY', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 12, 30, 59, tzinfo=tzutc())},
{'UserName': 'eee', 'AccessKeyId': 'AKIAYWQTISJDUARK6FV', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 16, 58, 38, tzinfo=tzutc())}
]
new_data = {}
for entry in data:
new_data.setdefault(entry["UserName"], []).append(
{k: v for k, v in entry.items() if k != "UserName"}
)
print(new_data)
Output (some fields hidden because I don’t want to import those libraries in my repl, but they’ll be there when you run it)
{'aaa': [{'AccessKeyId': 'AKIAYWQTISJD6X27YVK', 'Status': 'Active'}],
'eee': [{'AccessKeyId': 'AKIAYWQTISJD6QXMAKY', 'Status': 'Active'},
{'AccessKeyId': 'AKIAYWQTISJDUARK6FV', 'Status': 'Active'}]}
I am new to python and I am trying to construct data structure from existing data.
I have following:
[
{'UserName': 'aaa', 'AccessKeyId': 'AKIAYWQTISJD6X27YVK', 'Status': 'Active', 'CreateDate': datetime.datetime(2022, 9, 8, 15, 56, 39, tzinfo=tzutc())},
{'UserName': 'eee', 'AccessKeyId': 'AKIAYWQTISJD6QXMAKY', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 12, 30, 59, tzinfo=tzutc())},
{'UserName': 'eee', 'AccessKeyId': 'AKIAYWQTISJDUARK6FV', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 16, 58, 38, tzinfo=tzutc())}
]
I need to get this:
{
"aaa": [
{'AccessKeyId': 'AKIAYWQTISJD6X27YVK', 'Status': 'Active', 'CreateDate': datetime.datetime(2022, 9, 8, 15, 56, 39, tzinfo=tzutc())}],
"eee": [
{'AccessKeyId': 'AKIAYWQTISJD6QXMAKY', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 12, 30, 59, tzinfo=tzutc())},
{'AccessKeyId': 'AKIAYWQTISJDUARK6FV', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 16, 58, 38, tzinfo=tzutc())}
]
}
I tried following:
list_per_user = {i['UserName']: copy.deepcopy(i) for i in key_list}
for obj in list_per_user:
del list_per_user[obj]['UserName']
but I am missing array here. So in case of two keys per user I will have only last one with this. I don’t know how to get the list I need per user.
Thanks!
Create an external dict that maps username -> list of entries.
data = [
{'UserName': 'aaa', 'AccessKeyId': 'AKIAYWQTISJD6X27YVK', 'Status': 'Active', 'CreateDate': datetime.datetime(2022, 9, 8, 15, 56, 39, tzinfo=tzutc())},
{'UserName': 'eee', 'AccessKeyId': 'AKIAYWQTISJD6QXMAKY', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 12, 30, 59, tzinfo=tzutc())},
{'UserName': 'eee', 'AccessKeyId': 'AKIAYWQTISJDUARK6FV', 'Status': 'Active', 'CreateDate': datetime.datetime(2023, 1, 24, 16, 58, 38, tzinfo=tzutc())}
]
new_data = {}
for entry in data:
new_data.setdefault(entry["UserName"], []).append(
{k: v for k, v in entry.items() if k != "UserName"}
)
print(new_data)
Output (some fields hidden because I don’t want to import those libraries in my repl, but they’ll be there when you run it)
{'aaa': [{'AccessKeyId': 'AKIAYWQTISJD6X27YVK', 'Status': 'Active'}],
'eee': [{'AccessKeyId': 'AKIAYWQTISJD6QXMAKY', 'Status': 'Active'},
{'AccessKeyId': 'AKIAYWQTISJDUARK6FV', 'Status': 'Active'}]}