/Python/Python sort list by custom function

Python sort list by custom function

Python sort a list by a custom order

# Example usage:
list_to_sort = [('U', 23), ('R', 42), ('L', 17, 'D')]
custom_sort_order = ['R', 'D', 'L', 'U']
sorted(list_to_sort, key=lambda list_to_sort: custom_sort_order.index(list_to_sort[0]))
# Where 0 is the tuple index to use for sorting by custom order
--> [('R', 42), ('L', 17, 'D'), ('U', 23)]

Source: stackoverflow.com

Python sort list by custom function

from functools import cmp_to_key
sorted(mylist, key=cmp_to_key(lambda item1, item2: fitness(item1) - fitness(item2)))

Source: stackoverflow.com

Python sort list by custom function

from functools import cmp_to_key
sorted(mylist, key=cmp_to_key(compare))

Source: stackoverflow.com

Similar codes

0 vote106 views1 answer
Django.db.utils.IntegrityError: column contains null values
Python
-1 vote97 views1 answer
Sorting numbers in python without sort function
Python
0 vote146 views1 answer
Extends template django file system
Python Django
3 votes133 views6 answers
Get multiple inputs in python
Python
22 votes109 views1 answer
How to automatically copy an output to clipboard in python
Python
1 vote97 views1 answer
Numpy unique axis
Python
4 votes108 views5 answers
Random password generator
Python
0 vote120 views1 answer
Column names reading csv file python
Python
0 vote102 views1 answer
How to assign a new value in a column in pandas dataframe
Python
5 votes108 views3 answers
Python if not
Python