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Python: Invert a dictionary with unique hashable values

Python dictionary: Exercise-72 with Solution

Write a Python program to invert a dictionary with unique hashable values.

  • Use dictionary.items() in combination with a list comprehension to create a new dictionary with the values and keys inverted.

Sample Solution:

Python Code:

def test(students):
  return { value: key for key, value in students.items() }
 
students = {
  'Theodore': 10,
  'Mathew': 11,
  'Roxanne': 9,
}
print(test(students))

Sample Output: 

{10: 'Theodore', 11: 'Mathew', 9: 'Roxanne'}

Flowchart:

Flowchart: Invert a dictionary with unique hashable values.

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Previous: Write a Python program to retrieve the value of the nested key indicated by the given selector list from a dictionary or list.
Next: Write a Python program to convert a list of dictionaries into a list of values corresponding to the specified key.

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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