Python: Calculate the difference between two iterables, without filtering duplicate values
Python List: Exercise - 247 with Solution
Write a Python program to calculate the difference between two iterables, without filtering duplicate values.
- Create a set from y.
- Use a list comprehension on x to only keep values not contained in the previously created set, _y.
Sample Solution:
Python Code:
def difference(x, y):
_y = set(y)
return [item for item in x if item not in _y]
print(difference([1, 2, 3], [1, 2, 4]))
Sample Output:
[3]
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Next: Write a Python program to get the maximum value of a list, after mapping each element to a value using a given function.
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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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