如何在python中用值替换json中的变量？

在上面的脚本中，我创建了一个UUID，并将其分配给变量

random\UUID

。我希望创建的UUID在json中被替换为键

id

的值

random\u UUID

。但是，上面的脚本并没有替换

random\u uuid

的值，而是使用变量

random\u uuid

本身

谁能告诉我我做错了什么

---

提前感谢。

您可以使用字符串格式

在JSON字符串中，将random_uuid替换为%s，然后执行以下操作：

#!/usr/bin/python
import requests
import uuid

random_uuid = uuid.uuid4()
print random_uuid
url = "http://192.168.54.214:8080/credential-store/domain/_/createCredentials"

payload = '''json={
        "": "0",
        "credentials": {
            "scope": "GLOBAL",
            "id": "random_uuid",
            "username": "testuser3",
            "password": "bar",
            "description": "biz",
            "$class": "com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl"
        }
    }'''
headers = {
    'content-type': "application/x-www-form-urlencoded",
    }

response = requests.request("POST", url, data=payload, headers=headers)

print(response.text)

另一个选项是使用

json.dumps

创建json：

payload = payload % random_uuid

此代码可能会有所帮助

payload_dict = {
    'id': random_uuid,
    ...
}

payload = json.dumps(payload_dict)

---

改用

str.format

：

#!/usr/bin/python
import requests
import uuid

random_uuid = uuid.uuid4()
print random_uuid
url = "http://192.168.54.214:8080/credential-store/domain/_/createCredentials"

payload = '''json={
        "": "0",
        "credentials": {
            "scope": "GLOBAL",
            "id": "%s",
            "username": "testuser3",
            "password": "bar",
            "description": "biz",
            "$class": "com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl"
        }
    }''' % random_uuid
headers = {
    'content-type': "application/x-www-form-urlencoded",
    }

print payload

print(response.text)

---

您可以使用直接JSON输入到

dict

：

有效载荷={
"": "0",
“全权证书”：{
“范围”：“全球”，
“id”：随机的，
“用户名”：“testuser3”，
“密码”：“栏”，
“描述”：“商业”，
“$class”：“com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl”
}
}

payload = '''json={
        "": "0",
        "credentials": {
            "scope": "GLOBAL",
            "id": "{0}",
            "username": "testuser3",
            "password": "bar",
            "description": "biz",
            "$class": "com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl"
        }
    }'''.format(random_uuid)