/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

2 votes265 views2 answers
Python fillna with mode
Python
1 vote280 views1 answer
Handler.setLevel(logging.DEBUG) not working python
Python
6 votes274 views2 answers
Tkinter label border
Python
0 vote294 views1 answer
Codeforces 677a solution
Python
0 vote317 views1 answer
Plotly facet_grid python
Python
2 votes285 views2 answers
How to convert string to byte without encoding python
Python
1 vote278 views2 answers
How to get elasticsearch index list using python
Python
0 vote314 views2 answers
Create dictionary without removing duplicates from dataframe
Python
0 vote273 views1 answer
Python - change the bin size of an histogram+
Python
2 votes281 views1 answer
Fstring number format python
Python