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Python Exercise: Unique elements from a list

Python Functions: Exercise-8 with Solution

Write a Python function that takes a list and returns a new list with unique elements of the first list.

Sample Solution:-

Python Code:

def unique_list(l):
  x = []
  for a in l:
    if a not in x:
      x.append(a)
  return x

print(unique_list([1,2,3,3,3,3,4,5]))

Sample Output: 

[1, 2, 3, 4, 5]

Pictorial presentation:

Python exercises: Unique elements from a list.

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Flowchart: Python exercises: Unique elements from a list.

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Python: Tips of the Day

Creates a dictionary with the same keys as the provided dictionary and values generated by running the provided function for each value

Example:

def tips_map_values(obj, fn):
  ret = {}
  for key in obj.keys():
    ret[key] = fn(obj[key])
  return ret
users = {
  'Owen': { 'user': 'Owen', 'age': 29 },
  'Eddie': { 'user': 'Eddie', 'age': 15 }
}

print(tips_map_values(users, lambda u : u['age'])) # {'Owen': 29, 'Eddie': 15}

Output:

{'Owen': 29, 'Eddie': 15}