w3resource

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

Python dictionary: Exercise-74 with Solution

Write a Python program to create a dictionary with the same keys as the given dictionary and values generated by running the given function for each value.

Sample Solution:

Python Code:

def test(obj, fn):
  return dict((k, fn(v)) for k, v in obj.items())
 
users = {
  'Theodore': { 'user': 'Theodore', 'age': 45 },
  'Roxanne': { 'user': 'Roxanne', 'age': 15 },
  'Mathew': { 'user': 'Mathew', 'age': 21 },
}
print("\nOriginal dictionary elements:")
print(users)
print("\nDictionary with the same keys:")
print(test(users, lambda u : u['age']))

Sample Output:

Original dictionary elements:
{'Theodore': {'user': 'Theodore', 'age': 45}, 'Roxanne': {'user': 'Roxanne', 'age': 15}, 'Mathew': {'user': 'Mathew', 'age': 21}}

Dictionary with the same keys:
{'Theodore': 45, 'Roxanne': 15, 'Mathew': 21}

Flowchart:

Flowchart: Creates a dictionary with the same keys as the given dictionary and values generated by running the given function for each value.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:


Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to convert a list of dictionaries into a list of values corresponding to the specified key.
Next: Write a Python program to find all keys in the provided dictionary that have the given value.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Python: Tips of the Day

Decapitalizes the first letter of a string:

Example:

def tips_decapitalize(s, upper_rest=False):
  return s[:1].lower() + (s[1:].upper() if upper_rest else s[1:])
print(tips_decapitalize('PythonTips'))
print(tips_decapitalize('PythonTips', True)) 

Output:

pythonTips
pYTHONTIPS