sort in descending order python 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 sorted descending

sorted_list = sorted(list)					# ascending (default)
sorted_list = sorted(list, reverse=True)    # descending

Example 4: 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 5: python sort list

# sort() will change the original list into a sorted list
vowels = ['e', 'a', 'u', 'o', 'i']
vowels.sort()
# Output:
# ['a', 'e', 'i', 'o', 'u']

# sorted() will sort the list and return it while keeping the original
sortedVowels = sorted(vowels)
# Output:
# ['a', 'e', 'i', 'o', 'u']

Example 6: sort an array python

#List
myList = [1,5,3,4]
myList.sort()
print(myList)
	#[1,3,4,5]