'numpy.ndarray' object has no attribute 'expend'

根据提供的引用内容，'numpy.ndarray' object没有'expend'属性的原因是该属性不存在于numpy的ndarray对象中。因此，当尝试使用'expend'属性时，会出现'numpy.ndarray' object has no attribute 'expend'的错误。

以下是一个演示例子：

import numpy as np

arr = np.array([1, 2, 3])
arr.expend(4)  # 这里会报错：'numpy.ndarray' object has no attribute 'expend'

在上述代码中，我们创建了一个numpy的ndarray对象arr，并尝试使用'expend'属性来扩展数组的大小。然而，由于'expend'属性不存在于ndarray对象中，所以会出现错误。

相关问题

numpy.ndarray' object has no attribute

It depends on the specific attribute that is being referred to.

If the error message says "'numpy.ndarray' object has no attribute X", it means that the ndarray object does not have an attribute named X. This could be due to a typo in the attribute name or because the attribute does not exist in the ndarray class.

Some common attributes of the ndarray class include shape, size, dtype, ndim, and data. If any of these attributes are misspelled or used incorrectly, a similar error message may appear.

To avoid this error, it is important to carefully check the spelling and syntax of all attribute names and ensure that they are appropriate for the specific class being used.

numpy.ndarray object has no attribute values

这是一个 Python 的错误信息，表示 numpy 的 ndarray 类型对象没有 values 属性。可能是因为你想使用 Pandas 的 DataFrame 中的 values 属性来获取 ndarray 类型的数据，但是误用在了一个不支持 values 属性的类型上。建议仔细检查代码，查找并解决对该属性的误用。