python - 动态地向类提供变量

Question

我试过这里官方教程提供的例子:

http://saratoga.readthedocs.org/en/latest/serviceclasses.html

我对代码做了一些修改，现在看起来是这样的:

http://23.21.167.60:8094/v1/yearlength?name=earth

我的问题是我需要在 URL 中提供 account=211829，就像 name=earth 一样。

我在下面写的是有效的，因为我已经向类(class)提供了帐号。我如何动态执行此操作？

import json
from saratoga.api import SaratogaAPI, DefaultServiceClass

class PlanetServiceClass(DefaultServiceClass):
    def __init__(self, myaccount):
        self.yearLength = {
            "earth": self.myquery(myaccount),
            "pluto": {"seconds": 7816176000}
        }

    def myquery(self, myaccount):
        import pandas as pd

        query = ('select * from mydata198 where account = %s  ')  % (myaccount)

        import sqlalchemy
        engine = sqlalchemy.create_engine('mysql+pymysql://dba:pass@1.2.3.4/test')
        conn = engine.raw_connection()

        df=pd.read_sql(query, conn)
        return df.to_json()

class PlanetAPI(object):
    class v1(object):
        def yearlength_GET(self, request, params):
            planetName = params["params"]["name"].lower()
            return self.yearLength.get(planetName)

APIDescription = json.load(open("planets.json"))
myAPI = SaratogaAPI(PlanetAPI, APIDescription, serviceClass=PlanetServiceClass('211829'))
myAPI.run(port=8094)

如何将 account_num 变量从 PlanetAPI 类传递到 PlanetServiceClass？

Answer 1

您需要将您的网址更改为

http://23.21.167.60:8094/v1/yearlength?name=earth&account_num=12345

然后在代码中你可以通过

访问它

account_num = params["params"]["account_num"]

编辑:

问题是您当前正在使用 account_num 在服务器运行之前对其进行初始化。所以需要在运行后传入。

class PlanetAPI(object):
    class v1(object):
        def yearlength_GET(self, request, params):
            planetName = params["params"]["name"].lower()
            account_num = params["params"]["account_num"]

            mysql_result_json = self.myquery(account_num)
            self.yearLength['earth'] = mysql_result_json  # assign to earth if you want, as in your question
            return self.yearLength.get(planetName)

然后将其余代码改回教程中的代码:

myAPI = SaratogaAPI(PlanetAPI, APIDescription, serviceClass=PlanetServiceClass())

和

class PlanetServiceClass(DefaultServiceClass):
    def __init__(self):