Question

我需要将GET请求发送到1000个奇数URL，这些URL是从文件中提取的。这些URL的响应将转换为JSON对象，我将根据某些键迭代并打印值。在单个URL上执行时，此代码可以正常工作，但在循环中不起作用。

我认为这是由于将值添加到已经存在的字典中，所以我试图在循环结束时删除字典，但仍然是相同的问题

    import requests
    import objectpath
    import json
    user = ‘example_user’
    password = ‘example_pass’
    with open('rest.txt') as f:   #rest.txt contains all the URLs
        for url in f:
            r = requests.get(url, auth=(user, password))
            data = r.json()
            jsonnn_tree = objectpath.Tree(data)
            result_name = tuple(jsonnn_tree.execute('$..name'))
            result_permission = tuple(jsonnn_tree.execute('$..permission'))
            print(result_name)
            print(result_permission)
    f.close()

我希望O / P包含与键对应的值。

我得到的错误是

data = r.json()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/requests/models.py", line 889, in json
    self.content.decode(encoding), **kwargs
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Answer 1

在get请求中使用的URL是错误的，因为变量url的输出包含换行符，我必须使用url = url.rstrip（'\ n'）来纠正此问题。问题已解决。

    import requests
    import objectpath
    import json
    user = ‘example_user’
    password = ‘example_pass’
    with open('rest.txt') as f:   #rest.txt contains all the URLs
    for url in f:
        url = url.rstrip('\n')
        r = requests.get(url, auth=(user, password))
        data = r.json()
        jsonnn_tree = objectpath.Tree(data)
        result_name = tuple(jsonnn_tree.execute('$..name'))
        result_permission = tuple(jsonnn_tree.execute('$..permission'))
        print(result_name)
        print(result_permission)
    f.close()

遍历json对象

1 个答案: