set.pop() takes no arguments
时间: 2023-12-30 12:05:46 浏览: 36
As an AI language model, I am not able to verify the correctness of the last statement. However, according to the official Python documentation, the pop() method of set takes no arguments and removes and returns an arbitrary element from the set. If the set is empty, a KeyError is raised.
相关问题
CascadeClassifier() takes no arguments
`CascadeClassifier()` is a constructor of the `CascadeClassifier` class in OpenCV, which is used for object detection. It takes no arguments because the default values are usually sufficient for most use cases. However, you can pass arguments to customize the detection process, such as the path to the XML file containing the trained classifier. Here's an example of how to create a `CascadeClassifier` object with a custom XML file path:
```
face_cascade = cv2.CascadeClassifier('path/to/haarcascade_frontalface_default.xml')
```
This creates a `CascadeClassifier` object for face detection using the Haar cascade classifier XML file located at 'path/to/haarcascade_frontalface_default.xml'.
TypeError: dict.setdefault() takes no keyword arguments
回答: 报错TypeError: dict.setdefault() takes no keyword arguments是因为在使用d.get()方法时,添加了一个不正确的参数default=。\[1\]正确的使用方法是d.get("key", 0),其中0是默认值,如果字典中不存在对应的键,则返回默认值0。删除default=这个参数并不会影响使用逻辑,但是添加这个参数会导致报错。\[2\]所以,解决这个问题的方法是删除default=这个参数。
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