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Python: Insert an element before each element of a list

Python List: Exercise - 47 with Solution

Write a Python program to insert an element before each element of a list.

Python: Insert an element before each element of a list

Sample Solution:-

Python Code:

color = ['Red', 'Green', 'Black']
print("Original List: ",color)
color = [v for elt in color for v in ('c', elt)]
print("Original List: ",color)

Sample Output: 

Original List:  ['Red', 'Green', 'Black']                                                                     
Original List:  ['c', 'Red', 'c', 'Green', 'c', 'Black']

Flowchart:

Flowchart: Insert an element before each element of a list

Visualize Python code execution:

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Python Code Editor:

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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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