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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]

Flowchart:

Flowchart: Calculate the difference between two iterables, without filtering duplicate 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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