打印出特定格式的嵌套字典并输出到json文件

import json

def print_nested_dict(nested_dict, indent=0):
    for key, value in nested_dict.items():
        if isinstance(value, dict):
            print(f"{' ' * indent}{key}:")
            print_nested_dict(value, indent + 4)
        else:
            print(f"{' ' * indent}{key}: {value}")

# 示例嵌套字典
nested_dict = {
    "key1": "value1",
    "key2": {
        "nested_key1": "nested_value1",
        "nested_key2": "nested_value2"
    },
    "key3": "value3"
}

# 打印嵌套字典
print_nested_dict(nested_dict)

# 将嵌套字典输出到json文件
with open("output.json", "w") as file:
    json.dump(nested_dict, file, indent=4)