Python: Extract every first or specified element from a given two-dimensional list
Python List: Exercise - 144 with Solution
Write a Python program to extract every first or specified element from a given two-dimensional list.
Sample Solution:
Python Code:
def specified_element(nums, N):
result = [i[N] for i in nums]
return result
nums = [
[1,2,3,2],
[4,5,6,2],
[7,1,9,5],
]
print("Original list of lists:")
print(nums)
N = 0
print("\nExtract every first element from the said given two dimensional list:")
print(specified_element(nums, N))
N = 2
print("\nExtract every third element from the said given two dimensional list:")
print(specified_element(nums, N))
Sample Output:
Original list of lists: [[1, 2, 3, 2], [4, 5, 6, 2], [7, 1, 9, 5]] Extract every first element from the said given two dimensional list: [1, 4, 7] Extract every third element from the said given two dimensional list: [3, 6, 9]
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Python: Tips of the Day
Given a predicate function, fn, and a prop string, this curried function will then take an object to inspect by calling the property and passing it to the predicate:
Example:
def tips_check_prop(fn, prop): return lambda obj: fn(obj[prop]) check_age = tips_check_prop(lambda x: x >= 25, 'age') user = {'name': 'Owen', 'age': 25} print(check_age(user))
Output:
True
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