如何在Python定义的字符串中保留转义引号

方法一：手动双重转义 #

如果要直接定义带有转义双引号的字符串，需要对反斜杠进行双重转义（Python中单个反斜杠是转义符，要表示实际的反斜杠需写两个）：

a = "{\\\"key1\\\":\\\"value1\\\",\\\"key2\\\":\\\"value2\\\"}"
print(a)
# 输出："{\"key1\":\"value1\",\"key2\":\"value2\"}"

方法二：使用原始字符串（Raw String） #

在字符串前加r前缀，Python会将字符串中的反斜杠视为普通字符，无需额外转义：

a = r"{\"key1\":\"value1\",\"key2\":\"value2\"}"
print(a)
# 输出："{\"key1\":\"value1\",\"key2\":\"value2\"}"

方法三：用json模块自动处理嵌套JSON（推荐） #

手动转义容易出错，针对你需要的POST Body，更高效的方式是先构建多层字典，再通过json.dumps()自动处理转义：

import json

# 构建expression.value对应的内层字典
value_dict = {
    "type": "query",
    "e": "account",
    "variable": "parameterReference1",
    "condition": {
        "type": "boolean_combination",
        "operator": "and",
        "sub_conditions": [
            {
                "type": "comparison",
                "lhs": {
                    "type": "property",
                    "property_path": ["accountOrganization", "industry"]
                },
                "operator": "equals",
                "rhs": ["finance"]
            }
        ]
    }
}

# 构建完整的POST Body字典
post_body = {
    "name": "test24",
    "description": "test1",
    "schema": {"name": "schema_name"},
    "expression": {
        "format": "json",
        "type": "blah",
        "value": json.dumps(value_dict)  # 将内层字典转为带转义的JSON字符串
    },
    "type": "sd"
}

# 生成最终的POST Body字符串
final_post_body = json.dumps(post_body)
print(final_post_body)

运行后会输出你需要的格式：

{"name":"test24","description":"test1","schema":{"name":"schema_name"},"expression":{"format":"json","type":"blah","value":"{\"type\":\"query\",\"e\":\"account\",\"variable\":\"parameterReference1\",\"condition\":{\"type\":\"boolean_combination\",\"operator\":\"and\",\"sub_conditions\":[{\"type\":\"comparison\",\"lhs\":{\"type\":\"property\",\"property_path\":[\"accountOrganization\",\"industry\"]},\"operator\":\"equals\",\"rhs\":[\"finance\"]]}}}","type":"sd"}

内容的提问来源于stack exchange，提问作者rishabh