循环访问 API 请求以记录值

debugcn 发表于 Dev

我是p

我正在使用一个对请求结果进行分页的 API，该 API 还方便地生成了一些包含分页信息的“超媒体”值；这些值之一是“next_page”。

我正在尝试创建一个接受请求的循环，记录此“next_page”值，然后使用“next_page”的值运行另一个请求，并记录下一页，依此类推，直到“next_page”的值= '无'。

到目前为止，这是我的功能，但这只是填充列表中的一项，而应该有 3。

pages = []
def build_requests(request):
    request = 'https://api.performancehorizon.com'+request
    job = requests.get(request, headers=headers, params=params)
    req = job.json()

    hypermedia_np = req['hypermedia']['pagination']['next_page']

    if hypermedia_np != 'None':
        next_page = req['hypermedia']['pagination']['next_page']
        pages.append(next_page)
        job = requests.get('https://api.performancehorizon.com'+next_page, headers=headers, params=params)
        req = job.json()
    else: print("Done!")

如何更改我的代码以循环执行此作业，直到“next_page”的值为“None”？

坦泽尔·乌拉赫曼

您可以使用以下修改后的代码

pages = []
def build_requests(request):
    request = 'https://api.performancehorizon.com' + request
    job = requests.get(request, headers=headers, params=params)
    req = job.json()

    hypermedia_np = req['hypermedia']['pagination']['next_page']

    while hypermedia_np is not None or hypermedia_np != 'None':
        next_page = req['hypermedia']['pagination']['next_page']
        if next_page is not None or next_page != 'None':
            pages.append(next_page)
            job = requests.get('https://api.performancehorizon.com' + next_page, headers=headers, params=params)
            req = job.json()
            hypermedia_np = req['hypermedia']['pagination']['next_page']
        else:
            hypermedia_np = None
    print("Done!")

或者您可以使用此简化版本，这也适用于您的情况

pages = []
def build_requests(request):
    request = 'https://api.performancehorizon.com' + request
    job = requests.get(request, headers=headers, params=params)
    req = job.json()

    hypermedia_np = req['hypermedia']['pagination']['next_page']

    while hypermedia_np is not None or hypermedia_np != 'None':
        pages.append(hypermedia_np)
        job = requests.get('https://api.performancehorizon.com' + hypermedia_np, headers=headers, params=params)
        req = job.json()
        hypermedia_np = req['hypermedia']['pagination']['next_page']

    print("Done!")

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