Python: Find the value of the last element in the given list that satisfies the provided testing function
Python List: Exercise - 240 with Solution
Write a Python program to find the value of the last element in the given list that satisfies the provided testing function.
Use a list comprehension and next() to return the last element in lst for which fn returns True.
Sample Solution:
Python Code:
def find_last(lst, fn):
return next(x for x in lst[::-1] if fn(x))
print(find_last([1, 2, 3, 4], lambda n: n % 2 == 1))
print(find_last([1, 2, 3, 4], lambda n: n % 2 == 0))
Sample Output:
3 4
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Next: Write a Python program to create a dictionary with the unique values of a given list as keys and their frequencies as the values.
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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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