/Python/From collections import defaultdict

From collections import defaultdict

>>> s = [('yellow', 1), ('blue', 2), ('yellow', 3), ('blue', 4), ('red', 1)]
>>> d = defaultdict(list)
>>> for k, v in s:
...     d[k].append(v)
...
>>> d.items()
[('blue', [2, 4]), ('red', [1]), ('yellow', [1, 3])]

Source: docs.python.org

Similar codes

0 vote313 views1 answer
Python get response from url
Python
0 vote308 views2 answers
Django get all models
Python
0 vote304 views1 answer
Check for the negative integers and float
Python
10 votes339 views1 answer
Python turtle
Python
0 vote296 views2 answers
How to add extra zeros after decimal in python
Python
0 vote292 views1 answer
Choose custom index pandas
Python
7 votes327 views4 answers
XLRDError: Excel xlsx file; not supported
Python
19 votes316 views5 answers
Pandas where retuning NaN
Python
4 votes308 views2 answers
How do i turn a tensor into a numpy array
Python
0 vote332 views2 answers
Reverse column order pandas
Python