Python: Access multiple elements of specified index from a given list
Python List: Exercise - 111 with Solution
Write a Python program to access multiple elements of specified index from a given list.
def access_elements(nums, list_index): result = [nums[i] for i in list_index] return result nums = [2,3,8,4,7,9,8,2,6,5,1,6,1,2,3,4,6,9,1,2] print ("Original list:") print(nums) list_index = [0,3,5,7,10] print("Index list:") print(list_index) print("\nItems with specified index of the said list:") print(access_elements(nums, list_index))
Original list: [2, 3, 8, 4, 7, 9, 8, 2, 6, 5, 1, 6, 1, 2, 3, 4, 6, 9, 1, 2] Index list: [0, 3, 5, 7, 10] Items with specified index of the said list: [2, 4, 9, 2, 1]
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Python: Tips of the Day
getrefcount will show how many times an object is used in the memory. It's a fantastic tool that can be used for memory management in any program and it's very convenient too.
Getrefcount will calculate the object usage at a low level ByteCode so it can tend to be higher than expected. For instance when you print a value that value is actually processed multiple times in the background inside the print function itself and getrefcount also counts the instance when the value is called with getrefcount method itself. So, it's safe to say that the count will actually always be at least 1 time higher than expected.
Here is a code to show how many times alphanumeric characters are referenced in a random code:
import sys x_val = 20 x_val += 1 y_val = "Heritage" x = sys.getrefcount(x_val) y = sys.getrefcount(y_val) print(x, y, sep="\n")
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