Python | Split given dictionary in half
While working with dictionaries, sometimes we might have a problem in which we need to reduce the space taken by single container and wish to divide the dictionary into 2 halves. Let’s discuss certain ways in which this task can be performed.
Method #1 : Using items() + len() + list slicing
The combination of above functions can easily perform this particular task in which slicing into half is done by list slicing and items of dictionary are extracted by items()
# Python3 code to demonstrate working of# Split dictionary by half# Using items() + len() + list slicing # Initialize dictionarytest_dict = {'gfg' : 6, 'is' : 4, 'for' : 2, 'CS' : 10} # printing original dictionaryprint("The original dictionary : " + str(test_dict)) # Using items() + len() + list slicing# Split dictionary by halfres1 = dict(list(test_dict.items())[len(test_dict)//2:])res2 = dict(list(test_dict.items())[:len(test_dict)//2]) # printing result print("The first half of dictionary : " + str(res1))print("The second half of dictionary : " + str(res2)) |
The original dictionary : {‘CS’: 10, ‘for’: 2, ‘is’: 4, ‘gfg’: 6}
The first half of dictionary : {‘is’: 4, ‘gfg’: 6}
The second half of dictionary : {‘for’: 2, ‘CS’: 10}
Method #2 : Using slice() + len() + items()
The combination of above functions can be used to perform this particular task. In this, we perform task similar to above method, just the difference is the slice operation is performed by slice() instead of list slicing.
# Python3 code to demonstrate working of# Split dictionary by half# Using items() + len() + slice()from itertools import islice # Initialize dictionarytest_dict = {'gfg' : 6, 'is' : 4, 'for' : 2, 'CS' : 10} # printing original dictionaryprint("The original dictionary : " + str(test_dict)) # Using items() + len() + slice()# Split dictionary by halfinc = iter(test_dict.items())res1 = dict(islice(inc, len(test_dict) // 2)) res2 = dict(inc) # printing result print("The first half of dictionary : " + str(res1))print("The second half of dictionary : " + str(res2)) |
The original dictionary : {‘CS’: 10, ‘for’: 2, ‘is’: 4, ‘gfg’: 6}
The first half of dictionary : {‘is’: 4, ‘gfg’: 6}
The second half of dictionary : {‘for’: 2, ‘CS’: 10}
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