split a key-value pair in Python - dictionary

Question

I have a dictionairy as follows:
{
"age": "76",
"Bank": "98310",
"Stage": "final",
"idnr": "4578",
"last number + Value": "[345:K]"}
I am trying to adjust the dictionary by splitting the last key-value pair creating a new key('total data'), it should look like this:
"Total data":¨[
{
"last number": "345"
"Value": "K"
}]
}
Does anyone know if there is a split function based on ':' and '+' or a for loop to accomplish this?
Thanks in advance.

Answer 1

One option to accomplish that could be getting the last key from the dict and using split on + for the key and : for the value removing the outer square brackets assuming the format of the data is always the same.
If you want Total data to contain a list, you can wrap the resulting dict in []
from pprint import pprint
d = {
"age": "76",
"Bank": "98310",
"Stage": "final",
"idnr": "4578",
"last number + Value": "[345:K]"
}
last = list(d.keys())[-1]
d["Total data"] = dict(
zip(
last.strip().split('+'),
d[last].strip("[]").split(':')
)
)
pprint(d)
Output (tested with Python 3.9.4)
{'Bank': '98310',
'Stage': 'final',
'Total data': {' Value': 'K', 'last number ': '345'},
'age': '76',
'idnr': '4578',
'last number + Value': '[345:K]'}
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