How to Access Elements in Nested Dictionaries by Index in Python?

Accessing Dictionary Elements by Index in Python

In Python, dictionaries are used to store data in a key-value pair format. Indexing these dictionaries allows you to retrieve specific values based on their associated keys.

Accessing Elements of a Nested Dictionary

Consider the following nested dictionary:

mydict = {
    'Apple': {'American': '16', 'Mexican': 10, 'Chinese': 5},
    'Grapes': {'Arabian': '25', 'Indian': '20'}
}

To access a particular element of this dictionary, you can use the following syntax:

mydict["key1"]["key2"]["..."]["keyN"]

Where "key1" is the top-level key, "key2" is the next-level key, and so on. For example, to access the "American" count of apples, you would do the following:

american_apple_count = mydict["Apple"]["American"]
print(american_apple_count)  # Output: 16

Unknown Keys at Runtime

In your specific case, you stated that you don't know the first element in Apple at runtime. To address this issue, you can iterate over the nested dictionary and access the elements by index:

for fruit_key in mydict:
    fruit_dict = mydict[fruit_key]
    for variety_key in fruit_dict:
        variety_count = fruit_dict[variety_key]
        print(f"{variety_key} count for {fruit_key}: {variety_count}")

This approach will print the following output:

American count for Apple: 16
Mexican count for Apple: 10
Chinese count for Apple: 5
Arabian count for Grapes: 25
Indian count for Grapes: 20

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