Eric Palakovich Carr

from pprint import pprint

formdata = [
    # last: dict -> formdata[name] = 'roel kramer'
    {"formname": "name", "formvalue": "Roel Kramer"},
    {"formname": "email", "formvalue": "contact@roelkramer.nl"},
    {"formname": "paragraph-0.title", "formvalue": "test titel 1"},
    {"formname": "paragraph-0.body", "formvalue": "bla bla body 1"},
    {"formname": "paragraph-0.image-0.src", "formvalue": "src 1"},
    {"formname": "paragraph-0.image-1.src", "formvalue": "src 2"},
    {"formname": "paragraph-1.title", "formvalue": "test titel 2"},
    {"formname": "paragraph-1.body", "formvalue": "bla bla body 2"},
    {"formname": "paragraph-1.image-0.src", "formvalue": "src 3"},
    {"formname": "paragraph-1.image-1.src", "formvalue": "src 4"},
    {"formname": "paragraph-1.image-2.src", "formvalue": "src 5"},
    {"formname": "paragraph-2.title", "formvalue": "test titel 3"},
    {"formname": "paragraph-2.body", "formvalue": "bla bla body 3"},
    {"formname": "paragraph-2.image-0.src", "formvalue": "src 6"},
    {"formname": "paragraph-2.image-1.src", "formvalue": "src 7"},
]

json_data = {}

def add_data(node, name, value):
    if '-' not in name:
        node[name] = value
    else:
        key = name[:name.index('-')]
        node_index = int(name[len(key) + 1:name.index('.')])
        node.setdefault(key, [])
        if node_index >= len(node[key]):
            node[key].append({})
        add_data(node[key][node_index],
                 name[name.index('.') + 1:],
                 value)

for data in formdata:
    add_data(json_data, data['formname'], data['formvalue'])

pprint(json_data)