Given a nested dictionary and we have to find sum of particular value in that nested dictionary. This is basically useful in cases where we are given a JSON object or we have scraped a particular page and we want to sum the value of a particular attribute in objects.
Code #1: Find sum of sharpness values using sum() function
# Python code to find sum values within nested dictionaries weapons = {' ': None, ' sword ': { ' steel': 151 , 'sharpness' : 100 , 'age' : 2 ,}, 'arrow' : { 'steel' : 120 , 'sharpness' : 205 , 'age' : 1 ,}} sumValue1 = sum (d[ 'sharpness' ] for d in weapons.values() if d) sumValue2 = sum (d[ 'steel' ] for d in weapons.values() if d) print (sumValue1) print (sumValue2) |
305 271
Code #2 : Using Iteration to convert it into key:value pair.
# Python code to find sum values within nested dictionaries weapons = {' ': None, ' sword ': { ' steel': 151 , 'sharpness' : 100 , 'age' : 2 ,}, 'arrow' : { 'steel' : 120 , 'sharpness' : 205 , 'age' : 1 ,}} sum = 0 # iterating key value pair for key ,value in weapons.items(): if value and 'sharpness' in value.keys(): # Adding value of sharpness to sum sum + = value[ 'sharpness' ] # printing sum print ( sum ) |
305
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.