/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

-1 vote149 views1 answer
'DataFrame' object has no attribute 'as_matrix'
Python
0 vote143 views1 answer
Repeat printing rows excel using python whenever i run the script
Python
2 votes192 views2 answers
What is role of ALLOWED_HOSTs in Django
Python Django
0 vote152 views1 answer
Python online practice test
Python
4 votes161 views3 answers
Pandas remove row if missing value in column
Python
0 vote223 views1 answer
Distinct rows in this DataFrame
Python
12 votes166 views6 answers
Python flask
Python
0 vote159 views1 answer
Python string: .replace()
Python
0 vote148 views1 answer
Pandas remove item from dictionary
Python
0 vote159 views1 answer
Expected a list of items but got type int . django
Python