Python: Shift last element to first position and first element to last position in a list
Python List: Exercise - 189 with Solution
Write a Python program to shift last element to first position and first element to last position in a given list.
Sample Solution:
Python Code:
def shift_first_last(lst):
x = lst.pop(0)
y = lst.pop()
lst.insert(0, y)
lst.insert(len(lst), x)
return lst
nums = [1,2,3,4,5,6,7]
print("Original list:")
print(nums)
print("Shift last element to first position and first element to last position of the said list:")
print(shift_first_last(nums))
chars = ['s','d','f','d','s','s','d','f']
print("\nOriginal list:")
print(chars)
print("Shift last element to first position and first element to last position of the said list:")
print(shift_first_last(chars))
Sample Output:
Original list: [1, 2, 3, 4, 5, 6, 7] Shift last element to first position and first element to last position of the said list: [7, 2, 3, 4, 5, 6, 1] Original list: ['s', 'd', 'f', 'd', 's', 's', 'd', 'f'] Shift last element to first position and first element to last position of the said list: ['f', 'd', 'f', 'd', 's', 's', 'd', 's']
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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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