Python | Get the number of keys with given value N in dictionary
In this article, we will see how to get the number of keys with some given value N in a given dictionary. There are multiple methods to do this task. Let’s see them with help of examples.
Simple method –
# Python3 code to Get the number of keys# with given value N in dictionary # Initialize dictionary test_dict = {'gfg' : 1, 'is' : 2, 'best' : 3, 'for' : 2, 'CS' : 2} # printing original dictionary print("The original dictionary : " + str(test_dict)) # Initialize value N = 2 # Using loop # Selective key values in dictionary res = 0for key in test_dict: if test_dict[key] == N: res = res + 1 # printing result print("Frequency of N is : " + str(res)) |
Output:
The original dictionary : {'CS': 2, 'for': 2, 'is': 2, 'gfg': 1, 'best': 3}
Frequency of N is : 3
Method #2: Using sum() + values()
# Python3 code to Get the number of keys# with given value N in dictionary# Using sum() + values() # Initialize dictionary test_dict = {'gfg' : 1, 'is' : 2, 'best' : 3, 'for' : 2, 'CS' : 2} # printing original dictionary print("The original dictionary : " + str(test_dict)) # Initialize value N = 2 # Using sum() + values() # Selective key values in dictionaryres = sum(x == N for x in test_dict.values()) # printing result print("Frequency of K is : " + str(res)) |
Output:
The original dictionary : {'is': 2, 'for': 2, 'gfg': 1, 'best': 3, 'CS': 2}
Frequency of K is : 3
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