In this article we will discuss how to create a list of all the values in dictionary.

Suppose we have a dictionary of string and integers i.e.

# Dictionary of string and int
wordFreqDic = {
    "Hello": 56,
    "at" : 23 ,
    "test" : 43,
    "this" : 2,
    "here" : 23,
    "city" : 2,
    }

Now we want all the Values from above dictionary in a list i.e.
[2, 43, 2, 23, 56, 23]

Let’s see how to do that,

Create a list of all values in dict using dict.values()

In python, dictionary class provides a member function i.e.

dict.values()

It returns a view object / iterator to the list of all values in dictionary.  We can use this object for iteration or creating new list.

Let’s use that to get the list of all values in the above dictionary.

# Create a new list from the view object returned by values() 
dictValues = list (wordFreqDic.values())

dictValues content will be,
[2, 43, 2, 23, 56, 23]

Creating a list of duplicate values in dictionary

Suppose instead of all values we want a list of all duplicate values from the dictionary i.e.

[23 , 2]

Let’s do that using for loop i.e.

'''
Creating a list of dulicate values in dictionary
'''
uniqueValues = list()
duplicateValues = list()

# Creating a list of all duplicate values in dictionary     
for x in wordFreqDic.values() :
    if x not in uniqueValues :
        uniqueValues.append(x)
    else:    
        duplicateValues.append(x)
 
print("List of Duplicate values in Dictionary" , duplicateValues)

dictkeys content will be,
[2, 23]

Python Dictionary Tutorial - Series:

  1. What is a Dictionary in Python & why do we need it?
  2. Creating Dictionaries in Python
  3. Iterating over dictionaries
  4. Check if a key exists in dictionary
  5. Check if a value exists in dictionary
  6. Get all the keys in Dictionary
  7. Get all the Values in a Dictionary
  8. Remove a key from Dictionary
  9. Add key/value pairs in Dictionary
  10. Find keys by value in Dictionary
  11. Filter a dictionary by conditions
  12. Print dictionary line by line
  13. Convert a list to dictionary
  14. Sort a Dictionary by key
  15. Sort a dictionary by value in descending or ascending order
  16. Dictionary: Shallow vs Deep Copy
  17. Remove keys while Iterating
  18. Get all keys with maximum value
  19. Merge two or more dictionaries in python

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Complete example is as follows,

def main():
    
    # Dictionary of string and int
    wordFreqDic = {
        "Hello": 56,
        "at" : 23 ,
        "test" : 43,
        "this" : 2,
        "here" : 23,
        "city" : 2,
        }

    print(wordFreqDic)

    '''
    Creating a list of all values in dictionary
    '''
    
    # Create a new list from the view object returned by values() 
    dictValues = list (wordFreqDic.values())
    
    print("List of values in Dictionary : ", dictValues)
    
    '''
    Creating a list of dulicate values in dictionary
    '''
    uniqueValues = list()
    duplicateValues = list()
    
    # Creating a list of all duplicate values in dictionary     
    for x in wordFreqDic.values() :
        if x not in uniqueValues :
            uniqueValues.append(x)
        else:    
            duplicateValues.append(x)
     
    print("List of Duplicate values in Dictionary" , duplicateValues)
    
   
    
    
if __name__ == '__main__':
    main()

Output:
{'city': 2, 'test': 43, 'this': 2, 'at': 23, 'Hello': 56, 'here': 23}
List of values in Dictionary :  [2, 43, 2, 23, 56, 23]
List of Duplicate values in Dictionary [2, 23]

 

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