Python – Difference between Uni length slicing and Access Notation
Last Updated :
31 Aug, 2022
There are various ways to extract elements, Uni length slicing and Access Notations are among them. Let’s check difference between them.
Difference #1 : Different behaviour with Different Containers
The access notation return element in both List and Strings, but return 1 length strings while slicing using uni length slice and element in case of strings.
Python3
test_list = [5, 7, 2, 6, 8, 1]
test_str = "572681"
print("The original list : " + str(test_list))
print("The original string : " + str(test_str))
print("\r")
acc_list = test_list[3]
acc_str = test_str[3]
slc_list = test_list[3 : 4]
slc_str = test_str[3 : 4]
print("The access notation result for list : " + str(acc_list))
print("The access notation result for string : " + str(acc_str))
print("\r")
print("The slicing result for list : " + str(slc_list))
print("The slicing result for string : " + str(slc_str))
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Output
The original list : [5, 7, 2, 6, 8, 1]
The original string : 572681
The access notation result for list : 6
The access notation result for string : 6
The slicing result for list : [6]
The slicing result for string : 6
Difference #2 : No Index out of bounds Exception in case of Slice operation
There is no out of bounds exception in case of Slice Operation, but there is, in case of access notation.
Python3
test_list = [5, 7, 2, 6, 8, 1]
print("The original list : " + str(test_list))
try :
acc_list = test_list[17]
except Exception as e:
acc_list = str(e)
slc_list = test_list[17 : 18]
print("The access notation result for list : " + str(acc_list))
print("The slicing result for list : " + str(slc_list))
|
Output
The original list : [5, 7, 2, 6, 8, 1]
The access notation result for list : list index out of range
The slicing result for list : []
The Time and Space Complexity for all the methods are the same:
Time Complexity: O(n)
Auxiliary Space: O(n)
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