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Python: Print a list after removing specified elements

Python List: Exercise - 12 with Solution

Write a Python program to print a specified list after removing the 0th, 4th and 5th elements.

Pictorial Presentation:

Python: Print a list after removing specified elements

Sample Solution:

Python Code:

color = ['Red', 'Green', 'White', 'Black', 'Pink', 'Yellow']
color = [x for (i,x) in enumerate(color) if i not in (0,4,5)]
print(color)

Sample Output: 

['Green', 'White', 'Black']

Explanation:

In the above exercise -

color = ['Red', 'Green', 'White', 'Black', 'Pink', 'Yellow']  -> Creates a list color containing some color names.

color = [x for (i,x) in enumerate(color) if i not in (0,4,5)]  -> Creates a new list using a list comprehension. The list comprehension loops over each element (i, x) in color and includes only those elements where i is not in (0, 4, 5).

  • enumerate(color) returns a list of tuples containing the index and value of each element in color.
    • 

  • (i, x) unpacks each tuple into two variables, i and x.
    • 

  • if i not in (0, 4, 5) checks if the index of the current element is not equal to 0, 4 or 5.
    • 

  • [x for ...] creates a new list containing only the values of the elements that meet the condition specified in the if statement.
    •

    After this code runs, the list color will only contain the elements that have an index of 1, 2, or 3. So, the colors 'Green', 'White', and 'Black' will be included, and 'Red', 'Pink', and 'Yellow' will be removed.

    Flowchart:

    Flowchart: Print a list after removing specified elements

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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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