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Deleting multiple key value pairs from dictionary in python

I generated a python dictionary for all the duplicate images in a folder. The python dictonary now contains values in the following format:

{
  "image_1.jpg": ['image_xyz.jpg', 'image_abc.jpg'],
  "image_xyz.jpg": ["image_1.jpg", "image_abc.jpg"],
  "image_abc.jpg": ["image_xyz.jpg","image_1.jpg"],
  "image_2.jpg": ["image_3.jpg"],
  "image_3.jpg": ["image_2.jpg"],
  "image_5.jpg": []
}

Each key, value pair thus appears atleast twice in the list. Empty list for keys are present which have no duplicates. Is there a way to delete all the duplicate key value pairs present? so that the dictionary looks like the following:

{
  "image_1.jpg": ['image_xyz.jpg', 'image_abc.jpg'],
  "image_2.jpg": ["image_3.jpg"],
  "image_5.jpg": []
}

I tried using list to first store all the values from the key value pair and then deleting them from the dictionary but it empties the whole dictionary.


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source = {
  "image_1.jpg": ['image_xyz.jpg', 'image_abc.jpg'],
  "image_xyz.jpg": ["image_1.jpg", "image_abc.jpg"],
  "image_abc.jpg": ["image_xyz.jpg","image_1.jpg"],
  "image_2.jpg": ["image_3.jpg"],
  "image_3.jpg": ["image_2.jpg"],
  "image_5.jpg": []
}

dest = dict()

for k,v in source.items():
    ok = True
    for k1,v1 in dest.items():
        if k in v1: ok = False
    if ok: dest[k] = v

print(dest) # New filtered dict

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