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Editorial Team
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Asked: 2026-05-23T17:10:38+00:00

I have a form that submits data to the server that looks like the

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I have a form that submits data to the server that looks like the following:

videos[0][type]=Vimeo&
  videos[0][moments][0][time]=11&
  videos[0][moments][0][lng]=111&
  videos[0][moments][0][lat]=111&
  videos[0][moments][1][time]=222&
  videos[0][moments][1][lng]=222&
  videos[0][moments][1][lat]=222&
videos[1][type]=YouTube&
  videos[1][moments][0][time]=111&
  videos[1][moments][0][lng]=111&
  videos[1][moments][0][lat]=111
...

I am using Flask and I would like to be able to loop through the videos and moments but it seems like there isn’t a way to do that. I tried looking for libraries on Google but my Google-fu is weak tonight.

Any suggestions? Thanks!

EDIT: Based on lazy1’s answer, I modified his/her code to

def add(root, path, value):
  for part in path[:-1]:
    root = root.setdefault(part, {})
  root[path[-1]] = value

def parse(s):
  items = {}
  for key, value in parse_qsl(s):
    parts = filter(None, re.split('[\[\]]', key))
    name = parts[0]
    if name not in items: 
      items[name] = {}
    add(items[name], parts[1:], value)
  return items

that will generate a hash:

{'map': {'title': 'orange'}, 'videos': {'1': {'moments': {'0': {'lat': '111', 'lng': '111', 'time': '111'}}, 'type': 'YouTube'}, '0': {'moments': {'1': {'lat': '222', 'lng': '222', 'time': '222'}, '0': {'lat': '111', 'lng': '111', 'time': '11'}}, 'type': 'Vimeo'}}}

for a query that looks like:

map[title]=orange&
videos[0][type]=Vimeo&
  videos[0][moments][0][time]=11&
  videos[0][moments][0][lng]=111&
  videos[0][moments][0][lat]=111&
  videos[0][moments][1][time]=222&
  videos[0][moments][1][lng]=222&
  videos[0][moments][1][lat]=222&
videos[1][type]=YouTube&
  videos[1][moments][0][time]=111&
  videos[1][moments][0][lng]=111&
  videos[1][moments][0][lat]=111
...
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1 Answer

  1. Editorial Team

    You can use urlparse.parse_qsl to get the query parameters. However you’ll need manually to construct the video objects.

    Example implementation can be:

    def add(root, path, value):
    for part in path[:-1]:
        root = root.setdefault(part, {})
    root[path[-1]] = value

def parse(s):
    videos = {}
    for key, value in parse_qsl(s):
        parts = filter(None, re.split('[\[\]]', key))
        insert(videos, parts[1:], value)
    return videos
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