The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()
时间: 2023-10-19 21:07:04 浏览: 73
sql中all,any,some用法
to determine whether the truth value of the array is True or False.
The `any()` function returns True if any element in the array is True, and False otherwise. It is equivalent to applying the logical OR operator to all elements in the array.
The `all()` function returns True if all elements in the array are True, and False otherwise. It is equivalent to applying the logical AND operator to all elements in the array.
For example:
```
import numpy as np
a = np.array([True, False, True])
print(a.any()) # prints True
print(a.all()) # prints False
```
In this example, the `any()` function returns True because at least one element in the array (`True`) is True. The `all()` function returns False because not all elements in the array are True.
阅读全文