test.py

import requests
from pprint import pprint
postID = '7dn55x'
c=requests.get('https://api.pushshift.io/reddit/search/comment/?ids=' + ','.join(requests.get('https://api.pushshift.io/reddit/submission/comment_ids/' + postID).json()['data'])).json()['data']
post = {'post':[]}
for b in c:
	if b['parent_id'][3:] == postID:
		post['post'].append(b['id'])
for i, b in enumerate(post['post']):
	temp = {b:[]}
	for x in c:
		if x['parent_id'][3:] == b:
			temp[b].append(x['id'])
	post['post'][i] = temp
for upper_index, b in enumerate(post['post']):
	for key, value in b.items():
		print(key)
		for key_index, i in enumerate(value):
			print('  ', i)
			temp = {i:[]}
			for x in c:
				if x['parent_id'][3:] == i:
					print('     ', x['parent_id'][3:])
					temp[i].append(x['id'])
			post['post'][upper_index][key][key_index] = temp
pprint(post['post'])