我想使用字典理解或for循环来清理嵌套的字典python。

nested_dict = {
    'key1': 'value1',
    'key2': {
        'nested_key1': 'nested_value1',
        'nested_key2': {
            'deep_key1': 'deep_value1',
            'deep_key2': 'deep_value2'
        }
    },
    'key3': 'value3'
}

# 使用字典理解来清理嵌套字典
cleaned_dict = {
    key: value if not isinstance(value, dict) else {
        nested_key2: deep_value2 
        for nested_key1, nested_value1 in value.items() 
        for nested_key2, deep_value2 in nested_value1.items()
    }
    for key, value in nested_dict.items()
}

print(cleaned_dict)

{
    'key1': 'value1',
    'key2': {
        'deep_key1': 'deep_value1',
        'deep_key2': 'deep_value2'
    },
    'key3': 'value3'
}

def clean_nested_dict(nested_dict):
    cleaned_dict = {}
    for key, value in nested_dict.items():
        if isinstance(value, dict):
            cleaned_value = {}
            for nested_key1, nested_value1 in value.items():
                if isinstance(nested_value1, dict):
                    cleaned_value.update(nested_value1)
                else:
                    cleaned_value[nested_key1] = nested_value1
            cleaned_dict[key] = cleaned_value
        else:
            cleaned_dict[key] = value
    return cleaned_dict

nested_dict = {
    'key1': 'value1',
    'key2': {
        'nested_key1': 'nested_value1',
        'nested_key2': {
            'deep_key1': 'deep_value1',
            'deep_key2': 'deep_value2'
        }
    },
    'key3': 'value3'
}

cleaned_dict = clean_nested_dict(nested_dict)
print(cleaned_dict)