how to parse values (iterate) from an api, within a list of dictionaries python

Question

I am trying to parse info (from "result") from an HTTP API which is in a list of dictionaries. How can I iterate to parse only the following values from all dictionaries?

"a_name":
"ch":
"e":

[
 {
 "2H": {
 "time": 156450, 
 "n_ap": 10, 
 "n_rad": 9, 
 "xyz": {
 "is_c": false, 
 "is_d": false, 
 "num_a": 0, 
 "num_d": 0
 }, 
 "o_time": 276, 
 "q_t": 16, 
 "result": [
 {
 "a_name": "abc", 
 "ch": 2, 
 "e": 12, 
 "s_f_list": {
 "b_l": [
 "C20"
 ], 
 "ch_l": {
 "CW160": [], 
 "CW20": [
 1, 
 6, 
 11
 ], 
 "CW4": [], 
 "CW8": []
 }
 }, 
 "s_id": "2z"
 }, 
 {
 "a_name": "abcd", 
 "ch": 3, 
 "e": 13, 
 "s_f_list": {
 "b_l": [
 "C20"
 ], 
 "ch_l": {
 "CW160": [], 
 "CW20": [
 1, 
 6, 
 11
 ], 
 "CW40": [], 
 "CW80": []
 }
 }, 
 "s_id": "2z"
 }, 
 .
 .
 .
 .
 .

I have tried the following code but I'm able to parse only first value. I'm new to python so if anyone here could help with this I would be very thankful.

import requests
url = "https://....."
response = requests.get(url)
data = response.json()
a_name = data[0]["2H"]["result"][0]["a_name"]
ch =data[0]["2H"]["result"][0]["ch"]
print(a_name)
print(ch)

output I received is : abc 2

Expected output:

a_name= abc ,ch = 2,e = 12
a_name= abcd ,ch = 3,e = 13
a_name= abcde ,ch = 4,e = 14
. 
.

I'm new to python so if anyone here could help with this I would be very thankful.

Answer 1

You could use a generator and a list comprehension that contains a nested dictionary comprehension. Not tested btw.

def gen_get_items(d, keys_list):
 for s in keys_list:
 if s in d.keys():
 yield s, d[s]
result_keys = ["aname", "ch", "e"]
results = data[0]["2H"]["result"]
specific_results = [
 {k: v for k, v in gen_get_items(r, result_keys)} 
 for r in results
 ]
for specific_result in specific_results:
 print(specific_result)

• dijksterhuis: Glad to hear it! Do try to remember to mark answers as accepted if they fulfil your question (I see you’re a newish user so thought I’d give you a heads up about this).