Summarize Nested Python Dict

summarize_dict.py

def summarize_dict_structure_v3(d, indent=0):
    """Recursively prints the structure of a nested dictionary, including lists.
    If a list has multiple elements, it iterates only over the first element.
    IMP NOTE: It assumes that a nested list would have uniform elements of same type,
    so it doesn't iterate over the whole list, rather looks at its first element.
    """
    for key, value in d.items():
        print('    ' * indent + str(key), end=': ')
        if isinstance(value, dict):
            print("{Dictionary}")
            summarize_dict_structure_v3(value, indent + 1)
        elif isinstance(value, list):
            print("[List of {} elements]".format(len(value)))
            if value:  # Check if the list is not empty
                print('    ' * (indent + 1) + "List elements type: ", end='')
                # Check the type of the first element in the list
                if isinstance(value[0], dict):
                    print("dict")
                    summarize_dict_structure_v3(value[0], indent + 2)
                else:
                    print(type(value[0]).__name__)
        else:
            print(type(value).__name__)

# Example nested dictionary with list containing dictionaries
nested_dict_v3 = {
    "name": "John",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "Anytown",
        "zip": "12345"
    },
    "hobbies": [
        {"name": "reading", "frequency": "weekly"},
        {"name": "cycling", "distance": "20km"},
        {"name": "hiking", "difficulty": "medium"}
    ]
}

# Summarize the structure of the modified dictionary
summarize_dict_structure_v3(nested_dict_v3)