/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

8 votes240 views1 answer
How to change a json file in json python
Python
0 vote318 views1 answer
How to factorise
Python
1 vote308 views1 answer
Create new column using dictionary padnas
Python
0 vote299 views2 answers
How to remove zero after decimal float python
Python
0 vote308 views1 answer
Appending hdf5 files
Python
1 vote298 views1 answer
Ros beginner tutorial python publisher
Python
4 votes330 views6 answers
Hex to rgb python
Python
1 vote291 views1 answer
How to custom page not found in django
Python
1 vote306 views1 answer
How to watermark a video using python
Python
0 vote265 views1 answer
Plt.tight_layout()
Python