/Python/Python append value to dictionary list

Python append value to dictionary list

Dictionary append value python

d = {1:2}
d.update({2: 4})
print(d) # {1: 2, 2: 4}

Python append value to dictionary list

import collections

a_dict = collections.defaultdict(list) # a dictionary key --> list (of any stuff)
a_dict["a"].append("hello")

print(a_dict)
>>> defaultdict(<class 'list'>, {'a': ['hello']})

a_dict["a"].append("kite")

print(a_dict)
>>> defaultdict(<class 'list'>, {'a': ['hello', 'kite']})

Source: kite.com

Similar codes

0 vote142 views1 answer
ApiError('d984ac0ae28d4afda0ddb26e348db535', UploadError('path', UploadWriteFailed(reason=WriteError('malformed_path', None), upload_session_id='AAAAAAAAACLukDh6ck8ZUw'))) python
Python
0 vote139 views1 answer
Create database tables python
Python
0 vote148 views1 answer
%d%m%y python
Python
0 vote143 views1 answer
Counter +1 python
Python
0 vote143 views1 answer
Gpt2 simple continue training from checkpoint
Python
0 vote142 views1 answer
Give columns while reading csv
Python
0 vote146 views1 answer
Access kwargs in template django
Python
0 vote147 views1 answer
Django set random password
Python
0 vote146 views1 answer
Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly
Python
0 vote139 views1 answer
Python dictionary dynamic key
Python