当第二个字符串多次出现时，从两个字符串之间的JSON变量中提取文本

import json

def extract_text(json_str1, json_str2):
    # 解析JSON字符串
    json_data = json.loads(json_str1)

    # 找到包含第二个字符串的JSON变量
    target_variable = find_variable(json_data, json_str2)

    # 提取文本
    if isinstance(target_variable, str):
        extracted_text = target_variable
    else:
        extracted_text = extract_text_from_nested(target_variable)

    return extracted_text

def find_variable(json_data, target_str):
    # 遍历JSON数据结构，找到目标变量
    for key, value in json_data.items():
        if isinstance(value, str) and value == target_str:
            return value
        elif isinstance(value, dict):
            nested_result = find_variable(value, target_str)
            if nested_result is not None:
                return nested_result

def extract_text_from_nested(json_data):
    # 递归地提取文本
    extracted_text = ""
    for key, value in json_data.items():
        if isinstance(value, str):
            extracted_text += value + " "
        elif isinstance(value, dict):
            extracted_text += extract_text_from_nested(value) + " "
    return extracted_text.strip()

# 示例输入
json_str1 = '{"name": "John", "age": 30, "address": {"street": "123 Main St", "city": "New York"}}'
json_str2 = "New York"

# 提取文本
result = extract_text(json_str1, json_str2)
print(result)