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Python: Split values into two groups, based on the result of the given filter list

Python List: Exercise - 231 with Solution

Write a Python program to split values into two groups, based on the result of the given filter list.

  • Use a list comprehension and zip() to add elements to groups, based on filter.
  • If filter has a truthy value for any element, add it to the first group, otherwise add it to the second group.

Sample Solution:

Python Code:

def bifurcate(colors, filter):
  return [
    [x for x, flag in zip(colors, filter) if flag],
    [x for x, flag in zip(colors, filter) if not flag]
  ]
print(bifurcate(['red', 'green', 'blue', 'pink'], [True, True, False, True]))

Sample Output:

[['red', 'green', 'pink'], ['blue']]

Flowchart:

Flowchart: Split values into two groups, based on the result of the given filter list.

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Previous: Write a Python program to find the indexes of all elements in the given list that satisfy the provided testing function.
Next: Write a Python program to chunk a given list into smaller lists of a specified size.

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Python: Tips of the Day

Floor Division:

When we speak of division we normally mean (/) float division operator, this will give a precise result in float format with decimals.

For a rounded integer result there is (//) floor division operator in Python. Floor division will only give integer results that are round numbers.

print(1000 // 300)
print(1000 / 300)

Output:

3
3.3333333333333335