How Can I Recursively Iterate Through Nested Dictionaries in Python?

Recursing through Nested Dictionaries

To iterate through all key-value pairs in a dictionary, including those within nested dictionaries, recursion is required. Here's a recursive function that addresses this problem:

def print_nested_dict(d):
    for key, val in d.items():
        if isinstance(val, dict):
            print_nested_dict(val)
        else:
            print(f"{key} : {val}")

In this function, we recursively explore the dictionary:

• If the value is another dictionary, the function calls itself with that dictionary.
• Otherwise, it prints the key-value pair.

Example Usage:

Consider the following dictionary:

d = {
    "xml": {
        "config": {
            "portstatus": {"status": "good"},
            "target": "1",
        },
        "port": "11",
    }
}

Calling print_nested_dict(d) will print the following output:

xml : {config: {portstatus: {status: good}, target: 1}, port: 11}
config : {portstatus: {status: good}, target: 1}
portstatus : {status: good}
target : 1
port : 11

This method effectively traverses through all levels of nested dictionaries, providing a comprehensive view of the data structure.

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