/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

1 vote113 views1 answer
How to change a header in pandas
Python
0 vote115 views1 answer
Django update field after save
Python
18 votes118 views3 answers
Get rid of n in string python
Python
0 vote132 views1 answer
Async asyncio input
Python
7 votes124 views4 answers
Pandas filter rows by value
Python
0 vote125 views1 answer
Open tar file pandas
Python
1 vote122 views1 answer
Python repeating scheduler
Python
2 votes125 views2 answers
Superscript python
Python
6 votes133 views4 answers
Python show all columns
Python
1 vote121 views2 answers
How ro have a incresing variable in python
Python