How to get just one attribute value out of json string - json

Question

i am pretty new to python and i tried some things but can't seem to find the solution for this.
I am making a get request to a ldap local server and the response is a list, i don't know if this is a list of lists or just a list.
[
"cn=Philip J. Fry,ou=people,dc=planetexpress,dc=com",
"cn=Turanga Leela,ou=people,dc=planetexpress,dc=com",
"cn=Bender Bending Rodr\u00edguez,ou=people,dc=planetexpress,dc=com"
]
I want to return a json with only the "cn" values.
Like this:
[
"Philip",
"Turanga",
"Bender"
]
Thanks for the help

Answer 1

I would convert the strings into dictionaries:
def ldap_to_dict(string):
d = {}
for pair in string.split(","):
key, val = pair.split("=")
if key in d: # handle multiple value case
if isinstance(d[key], list):
d[key].append(val)
else:
d[key] = [d[key], val]
else:
d[key] = val
return d
names = [ldap_to_dict(ldap_string)["cn"] for ldap_string in original_list]
Aftermath:
>>> names
['Philip J. Fry', 'Turanga Leela', 'Bender Bending Rodríguez']

Answer 2

Thanks guys for the quick responses.
I manage to do it like this:
list1 = []
list2 = []
list3 = []
#app.route('/users', methods=['GET'])
def list_users():
string = (ldap.get_group_members('ship_crew'))
for user in string:
list1.append(user.split(",")[0])
a = list1
for user in a:
list2.append(user.split("=")[1])
b = list2
for user in b:
list3.append(user.split(" ")[0])
return jsonify(list3)
Output:
['Philip', 'Turanga', 'Bender']
But now when i'am trying to return it as json with this command:
curl -X GET -H "Content-type: application/json charset=UTF-8" -H "Accept: application/json" http://localhost:5000/users
I get:
TypeError: a bytes-like object is required, not 'str'
Even if i json.dump my list3 and get:
["Philip", "Turanga", "Bender"]
I got the same error.
I'am getting my string from a ldap.
What's the problem here?
Thanks