AttributeError: 'NoneType' object has no attribute 'get_result'

AttributeError: 'NoneType' object has no attribute 'get_result'这个错误通常发生在你尝试调用一个没有返回任何结果的方法的结果。在Python中，如果你尝试对一个没有返回任何值的变量或方法进行访问，就会出现这个错误。例如，如果你在代码中使用了None作为方法的返回值，并且在尝试访问该方法的结果时出现了上述错误。这通常可以通过检查代码中是否正确地返回结果来解决。另外，你也可以使用try和except语句来捕获并处理这种类型的错误。

相关问题

显示的是AttributeError: 'NoneType' object has no attribute 'get_gj_data'

这个错误提示 "AttributeError: 'NoneType' object has no attribute 'get_gj_data'" 出现于Python编程中，当你尝试访问一个None类型的对象（即该对象值为None）的属性或方法`get_gj_data`时。NoneType是一个特殊的类型，在Python里表示没有对象或者值。这意味着你在某个函数返回了None，而你之后试图调用其`get_gj_data`方法，这会导致错误，因为None本身并没有这个属性。

解决这个问题的方法通常是检查前面代码，确认在调用`get_gj_data`之前对象已经被正确初始化并且不是None。如果是在尝试从可能为空的数据结构或函数获取数据，应该添加适当的错误处理，例如：

data = your_function()
if data is not None:
    result = data.get_gj_data()
else:
    print("Data is None, cannot get gj_data")

AttributeError: 'NoneType' object has no attribute 'find_all'

This error occurs when you try to call the method `find_all()` on a variable that is None. The `find_all()` method is a function of the BeautifulSoup object in Python, which is used to parse HTML or XML documents.

Here is an example of how this error might occur:

import requests
from bs4 import BeautifulSoup

# make a request to a webpage
response = requests.get("https://www.example.com")

# parse the HTML content of the webpage using BeautifulSoup
soup = BeautifulSoup(response.content, "html.parser")

# find all the links on the webpage
links = soup.find_all("a")

# print the links
for link in links:
    print(link.get("href"))

If the `response.content` is None or there is some other issue with the request, then `soup` will be None and calling `find_all()` on it will result in the 'NoneType' object has no attribute 'find_all' error.

To avoid this error, you should check that the object you are calling the method on is not None before calling the method.

Here is an example of how you could modify the code above to avoid this error:

import requests
from bs4 import BeautifulSoup

# make a request to a webpage
response = requests.get("https://www.example.com")

# check that the response was successful
if response.status_code == 200:

    # parse the HTML content of the webpage using BeautifulSoup
    soup = BeautifulSoup(response.content, "html.parser")

    # find all the links on the webpage
    if soup is not None:
        links = soup.find_all("a")

        # print the links
        for link in links:
            print(link.get("href"))

    else:
        print("Error parsing HTML content")
else:
    print("Error: could not retrieve webpage")