Python – Remove keys with Values Greater than K ( Including mixed values )
Given a dictionary with key-value pairs, remove all the keys with values greater than K, including mixed values.
Input : test_dict = {‘Gfg’ : 3, ‘is’ : 7, ‘best’ : 10, ‘for’ : 6, ‘geeks’ : ‘CS’}, K = 7
Output : {‘Gfg’ : 3, ‘for’ : 6, ‘geeks’ : ‘CS’}
Explanation : All values greater than K are removed. Mixed value is retained.Input : test_dict = {‘Gfg’ : 3, ‘is’ : 7, ‘best’ : 10, ‘for’ : 6, ‘geeks’ : ‘CS’}, K = 1
Output : {‘geeks’ : ‘CS’}
Explanation : Only Mixed value is retained.
Method #1 : Using isinstance() + loop
This is one of the ways in which this task can be performed. In this, we use instance to get integral values and and comparisons to get values not greater than K.
Python3
# Python3 code to demonstrate working of # Remove keys with Values Greater than K ( Including mixed values )# Using loop + isinstance() # initializing dictionarytest_dict = {'Gfg' : 3, 'is' : 7, 'best' : 10, 'for' : 6, 'geeks' : 'CS'} # printing original dictionaryprint("The original dictionary is : " + str(test_dict)) # initializing K K = 6 # using loop to iterate keys of dictionaryres = {}for key in test_dict: # testing for data type and then condition, order is imp. if not (isinstance(test_dict[key], int) and test_dict[key] > K): res[key] = test_dict[key] # printing result print("The constructed dictionary : " + str(res)) |
The original dictionary is : {'Gfg': 3, 'is': 7, 'best': 10, 'for': 6, 'geeks': 'CS'}
The constructed dictionary : {'Gfg': 3, 'for': 6, 'geeks': 'CS'}
Method #2 : Using dictionary comprehension + isinstance()
The combination of above functions is used to solve this problem. This performs task similar to above method. The only difference being that it performs in one liner using dictionary comprehension.
Python3
# Python3 code to demonstrate working of # Remove keys with Values Greater than K ( Including mixed values )# Using dictionary comprehension + isinstance() # initializing dictionarytest_dict = {'Gfg' : 3, 'is' : 7, 'best' : 10, 'for' : 6, 'geeks' : 'CS'} # printing original dictionaryprint("The original dictionary is : " + str(test_dict)) # initializing K K = 6 # using list comprehension to perform in one lineres = {key : val for key, val in test_dict.items() if not (isinstance(val, int) and (val > K))} # printing result print("The constructed dictionary : " + str(res)) |
The original dictionary is : {'Gfg': 3, 'is': 7, 'best': 10, 'for': 6, 'geeks': 'CS'}
The constructed dictionary : {'Gfg': 3, 'for': 6, 'geeks': 'CS'}
