Python3: Comparing multiple dictionaries in a list / Deleting repeated entries

Question

I have a list of dictionaries. Looks like this:

[{'direction': 'PLACE_A', 
    'line': 'S2', 
    'delay': 0, 
    'when': '2017-11-29T17:48:00+01:00', 
    'trip': 33738
    }

{'direction': 'PLACE_A', 
    'line': 'S2', 
    'delay': 0, 
    'when': '2017-11-29T17:48:00+01:00', 
    'trip': 33738
}
{'direction': 'PLACE_B', 
    'line': 'S1', 
    'delay': 0, 
    'when': '2017-11-29T17:51:00+01:00', 
    'trip': 33739
}
{'direction': 'PLACE_B', 
    'line': 'S1', 
    'delay': 0, 
    'when': '2017-11-29T17:55:00+01:00', 
    'trip': 33740
}
{'direction': 'PLACE_A', 
    'line': 'S2', 
    'delay': 0, 
    'when': '2017-11-29T17:48:00+01:00', 
    'trip': 33738
}]

Some of the entries appear twice or more: The value for trip is identical.

How can I reduce the list in a way that recurrent entries in the list of dictionaries are deleted? I tried something with set, but that didn't work here.

I appreciate any help. Thanks!

Does this give you what you need? https://stackoverflow.com/questions/11092511/python-list-of-unique-dictionaries — Alan, Nov 30 '17 at 11:34
@alan i think the problem is different, there they are checking only an `id` value to be unique, here the op wants to check if two dictionaries are the same or not — Mohsen_Fatemi, Nov 30 '17 at 11:38
https://stackoverflow.com/questions/9427163/remove-duplicate-dict-in-list-in-python — chakradhar kasturi, Nov 30 '17 at 12:01

score 0 · Answer 1 · answered Nov 30 '17 at 12:01

0

Just create a new list:

newlist = []
for item in oldlist:
    if item not in newlist:
        newlist.append(item)

answered Nov 30 '17 at 12:01

Pulsar

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Python3: Comparing multiple dictionaries in a list / Deleting repeated entries

1 Answers1