sort list python descending code example

Example 1: python sort list in reverse order

# there are two types of lists
# returns new list
sorted(list_name, reverse=True)

# changes list in place
list_name.sort(reverse=True)

Example 2: python sort list in reverse

#1 Changes list
list.sort(reverse=True)
#2 Returns sorted list
sorted(list, reverse=True)

Example 3: 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)]

Example 4: how to sort a list descending python

# defning A as a list
A.sort(reverse = True)

Example 5: sorting python array

sorted(list, key=..., reverse=...)