How to convert a list of dictionaries to a Bunch object

Question

I have a list of the following dictionaries:

[{'Key': 'tag-key-0', 'Value': 'value-0'},
 {'Key': 'tag-key-1', 'Value': 'value-1'},
 {'Key': 'tag-key-2', 'Value': 'value-2'},
 {'Key': 'tag-key-3', 'Value': 'value-3'},
 {'Key': 'tag-key-4', 'Value': 'value-4'}]

Is there an elegant way to convert it to a Bunch object?

Bunch(tag-key-0='value-0', tag-key-1='value-1', tag-key-2='value-2', tag-key-3='value-3', tag-key-4='value-4')

My current solution is:

from bunch import Bunch

tags_dict = {}
for tag in actual_tags:
    tags_dict[tag['Key']] = tag['Value']

Bunch.fromDict(tags_dict)

Thanks @Guy, but can I avoid that for loop that coverts list of dicts to dict ? — Samuel, Dec 21 '22 at 14:35

score 2 · Answer 1 · edited Jan 05 '23 at 16:13

Unless you are using a version of Bunch that is different than the one that you get via pip install bunch, the Bunch class has no from_dict classmethod.

Using Bunch(tags_dict) appears to work:

>>> from bunch import Bunch

>>> actual_tags = [{'Key': 'tag-key-0', 'Value': 'value-0'},
...  {'Key': 'tag-key-1', 'Value': 'value-1'},
...  {'Key': 'tag-key-2', 'Value': 'value-2'},
...  {'Key': 'tag-key-3', 'Value': 'value-3'},
...  {'Key': 'tag-key-4', 'Value': 'value-4'}]

>>> tags_dict = {tag['Key']: tag['Value'] for tag in actual_tags}

>>> print(Bunch(tags_dict))
tag-key-0: value-0
tag-key-1: value-1
tag-key-2: value-2
tag-key-3: value-3
tag-key-4: value-4

One thing to note: Bunch does not appear to be actively maintained - its last commit was over 10 years ago, and it does not seem to be fully compatible with Python 3. AttrDict appears to be more recent, but it is also inactive.

score 1 · Answer 2 · edited Jan 05 '23 at 16:10

1

Import:

from bunch import Bunch

Option 1:

b = Bunch({t['Key']:t['Value'] for t in actual_tags})

Option 2:

b = Bunch.fromDict({t['Key']:t['Value'] for t in actual_tags})

edited Jan 05 '23 at 16:10

Peter Mortensen

30,738
21
105
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answered Dec 21 '22 at 14:03

pylos

102
8

score 1 · Accepted Answer · edited Jan 05 '23 at 16:14

Use map of Bunch.values() from actual_tags:

actual_tags = [{'Key': 'tag-key-0', 'Value': 'value-0'},
               {'Key': 'tag-key-1', 'Value': 'value-1'},
               {'Key': 'tag-key-2', 'Value': 'value-2'},
               {'Key': 'tag-key-3', 'Value': 'value-3'},
               {'Key': 'tag-key-4', 'Value': 'value-4'}]

from bunch import Bunch

tags_dict = Bunch(map(Bunch.values, actual_tags))

print(tags_dict)
print(type(tags_dict))

Output:

tag-key-0: value-0
tag-key-1: value-1
tag-key-2: value-2
tag-key-3: value-3
tag-key-4: value-4

<class 'bunch.Bunch'>

How to convert a list of dictionaries to a Bunch object

3 Answers3