PythonAPI请求

Question

Source=["SGD"]
Destination=["USD"]
Amount=[5000]

```import requests

url = "https://api.currencyfair.com/comparisonQuotes“

有效载荷=“{\”currencyFrom\：\“SGD\”，\"currencyTo\":\"EUR\"，\“type\\”：\“SELL\”，\"amountInfo\"：

{“金额”：50000，\“比例”：2}“

标头={

'user-agent': "vscode-restclient",

'content-type': "application/json",

'accept': "application/json"

}

响应= requests.request("POST“、url、data=payload、headers=headers)

打印(response.text)

我需要将值传递给有效负载字符串-有效载荷= "{"currencyFrom":"SGD"，"currencyTo":"EUR"，"type":"SELL"，"amountInfo":{"amount":50000，“scale”：2}“需要使用在‘’上创建的3个列表将值传递给有效负载。

Answer 1

你能解释一下你想要什么吗？

我怀疑您的意思是，每次调用函数以发布数据时，您都希望动态更新文本有效负载中的值。

我通常会这样做:创建占位符字符串，然后在运行时替换占位符值来更新占位符。

payload = "{\"currencyFrom\":\"@currencyFrom\",\"currencyTo\":\"@currencyTo\",\"type\":\"SELL\",\"amountInfo\": {\"amount\":@amountInfo,\"scale\":2}}"

currencyFrom = 'USD'
currencyTo = 'EUR'
amountInfo = 50000

payload = payload.replace('@currencyFrom', currencyFrom).replace('@currencyTo', currencyTo).replace('@amountInfo', amountInfo)

看看您试图与之交互的API，这是它所期望的示例：

{"currencyFrom": "EUR",
"currencyTo": "GBP",
"type": "SELL",
"amountInfo": {"amount": 100},
"ignoreFee": false}

这是一个遵循特定格式的JSON对象，如果您试图传递一个列表，而不是"currencyFrom“、"currencyTo”字段中的字符串，则会得到一个错误。

要获得多个值，响应只需对API执行多个请求，例如：

payload = "{\"currencyFrom\":\"@currencyFrom\",\"currencyTo\":\"@currencyTo\",\"type\":\"SELL\",\"amountInfo\": {\"amount\":@amountInfo,\"scale\":2}}"

currencyFrom = ['USD', 'GBP']
currencyTo = ['EUR', 'CHF']
amountInfo = 50000

payload = payload.replace('@currencyFrom', currencyFrom).replace('@currencyTo', currencyTo).replace('@amountInfo', amountInfo)
for currFrom in currencyFrom:
    for currTo in currencyTo:
        for amount in amountInfo:
            payload = payload.replace('@currencyFrom', currFrom ).replace('@currencyTo', currTo ).replace('@amountInfo', amount )
            response = requests.request("POST", url, data=payload, headers=headers)

希望这有意义！

编辑:根据您的注释更新代码。