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Course Overview
Python sorted() Function
Python sorted() function is used to sort elements. By default, it sorts elements in ascending order but can be sorted descending also. It takes four arguments and returns collection in sorted order. In the case of a dictionary, it sorts only keys, not values.
The signature of the function is given below.
Signature
- sorted (iterable[, cmp[, key[, reverse]]])
Parameters
iterable: A collection on which sorting performs.
cmp: A custom comparison function. The default value is None.
key: A function.
reverse: To get sorted collection in reverse order.
Return
It returns a unique integer number.
Let’s see some examples of id() function to understand it’s functionality.
Python sorted() Function Example 1
Here, in this example, we are sorting a string object to understand the function.
-
# Python sorted() function example
str = “javatpoint” # declaring string
# Calling function
sorted1 = sorted(str) # sorting string
# Displaying result
print(sorted1)
Output:
- [‘a’, ‘a’, ‘i’, ‘j’, ‘n’, ‘o’, ‘p’, ‘t’, ‘t’, ‘v’]
Python sorted() Function Example 2
We can use this function to sort any iterable like list, tuple and dictionary. See the example below.
-
# Python sorted() function example
li = [2003,56,98,659,622,1002,3652]
tupl = (232,2500,3698,5264,2578,21)
dic = {3: ‘Three’,4:’Four’,1:’One’,2:’Two’}
# Calling function
lisorted = sorted(li) # sorting list
tupsorted = sorted(tupl) # tuple
dicsorted = sorted(dic) # dictionary
# Displaying result
print(lisorted)
print(tupsorted)
print(dicsorted)
Output:
-
[56, 98, 622, 659, 1002, 2003, 3652]
[21, 232, 2500, 2578, 3698, 5264]
[1, 2, 3, 4]
Python sorted() Function Example 3
To sort the list into reverse order (descending), pass True in reverse, and we will get the list sorted in reverse order.
-
# Python sorted() function example
li = [2003,56,98,659,622,1002,3652]
# Calling function
lisorted = sorted(li, reverse = True) # Sorting list in descending order
# Displaying result
print(lisorted)
Output:
- [3652, 2003, 1002, 659, 622, 98, 56]
Python sorted() Function Example 4
Here, we are sorting a list by passing a lambda function in the key during the call.
-
# Python sorted() function example
li = [(2,15),(3,5),(65,5),(8,5)]
# Calling function
lisorted = sorted(li, key=lambda x: sum(x)) # Sorting list by getting sum of tuples
# Displaying result
print(lisorted)
Output:
- [(3, 5), (8, 5), (2, 15), (65, 5)]
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