CODEWITHSUNDEEP
pythondictionary
user14187369
user14187369

Reputation:

How to extract the element from the dictionary without last item

Below are sample list and dictionary

List of Dictionary

[{'emptype': ['Manager'],
  'Designation': ['Developer'],
  'projecttype': ['temp']}]

Dictionary

{'emptype': ['Manager'],
  'Designation': ['Developer'],
  'projecttype': ['temp']}

How to extract the elements except last

Expected out from list of dictionary

[{'emptype': ['Manager'],
  'Designation': ['Developer']}]

Expected out from dictionary

 {'emptype': ['Manager'],
      'Designation': ['Developer']}

Upvotes: 1

Views: 85

Answers (4)

abdulsaboor
abdulsaboor

Reputation: 718

def remove_item(data):
    if type(data) is list:
        result = []
        for item in data:
            result.append(remove_item(item))
        return result
    elif type(data) is dict:
        data.pop(list(data.keys())[-1])
        return data
    return data

Upvotes: 0

adir abargil
adir abargil

Reputation: 5745

Here nice list comprehension in action:

  list_dicts = [dict(list(i.items())[:-1]) for i in list_dicts]

Upvotes: 0

arabinelli
arabinelli

Reputation: 1496

Using map:

d = [{'emptype': ['Manager1'],
  'Designation': ['Developer1'],
  'projecttype': ['temp1']},
   {'emptype': ['Manager2'],
  'Designation': ['Developer2'],
  'projecttype': ['temp2']},
  {'emptype': ['Manager3'],
  'Designation': ['Developer3'],
  'projecttype': ['temp3']},
  {'emptype': ['Manager4'],
  'Designation': ['Developer4'],
  'projecttype': ['temp4']}]

def remove_last_key(item: dict):
    item.pop(
        list(item.keys())[-1]
    )
    return item

list(map(remove_last_key,d))

This was tested on Python 3.7.7 (and should work on 3.6+) - When working on dict based on their order, the Python version matters. You can read more here: Are dictionaries ordered in Python 3.6+?

EDIT:

In certain cases, list comprehension might provide some advantages in terms of performance and are considered clearer by some. In this case:

[remove_last_key(item) for item in d]

Upvotes: 1

Marc
Marc

Reputation: 734

The basic operation for removing the last element of a dictionary mydict is mydict.pop(list(mydict)[-1]). If you have a list of dictionaries you can loop over them and apply the function to each dictionary.

mydict.keys()[-1] applies to python2

Upvotes: 0

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