The largest value with its key from the following dictionary python 3.8

Question

Input is: book_shop = {'sci fi': 12, 'mystery': 15, 'horror': 8, 'mythology': 10, 'young_adult': 4, 'adventure':14}

Output has to be: The highest selling book genre is mystery and the number of books sold are 15

Need to solve this without using max function.

I've tried this:

book_shop = {'sci fi': 12, 'mystery': 15, 'horror': 8, 'mythology': 10, 'young_adult': 4, 'adventure':14}
largest = 0

for key, value in book_shop.items():
    if largest in book_shop.values():
        largest = book_shop.values()
        key = book_shop.keys()
        
print("The highest selling book genre is ", key, " and the number of books sold are ", largest)

Output came: The highest selling book genre is adventure and the number of books sold are 0

What to do?

What have you tried on your side before you asked? What problems did you stumble upon? Please share your code! — Hampus Larsson, Aug 22 '20 at 18:17
Does this answer your question? [Getting key with maximum value in dictionary?](https://stackoverflow.com/questions/268272/getting-key-with-maximum-value-in-dictionary) — Abdeslem SMAHI, Aug 22 '20 at 18:19

Rajat Mishra · Accepted Answer · 2020-08-22T18:34:17.350

You can get the key with max value using :

max_key = max(book_shop,key=book_shop.get)

print("The highest selling book genre is ", max_key, " and the no of books sold are ",book_shop.get(max_key))

Updated your code to get max value without max function. Basically you should compare the largest value with the value for that specific key.

In [193]: book_shop = {'sci fi': 12, 'mystery': 15, 'horror': 8, 'mythology': 10, 'young_adult': 4, 'adventure':14} 
     ...: largest = 0 
     ...: key1= "" 
     ...: for key, value in book_shop.items(): 
     ...:     #print("key ",key," value ",value) 
     ...:     if largest < int(book_shop.get(key)): 
     ...:         #print(True) 
     ...:         largest = value 
     ...:         key1 = key 
     ...:          
     ...: print("The highest selling book genre is ", key1, " and the number of books sold are ", largest)

added a solution without max function – Rajat Mishra Aug 22 '20 at 18:34 — Rajat Mishra, Aug 22 '20 at 18:34

The largest value with its key from the following dictionary python 3.8

1 Answers1