'numpy.ndarray' object has no attribute 'replace'
时间: 2023-09-27 12:08:40 浏览: 163
The message `'numpy.ndarray' object has no attribute 'replace'` occurs when you try to call the `replace()` method on a NumPy array. However, NumPy arrays do not have a `replace()` method, which is why this error occurs.
The `replace()` method is a string method that replaces the occurrences of a substring with another substring. If you want to replace values in a NumPy array, you need to use the `numpy.where()` function instead.
For example, if you have a NumPy array `arr` and you want to replace all occurrences of the value 0 with the value 1, you can use the following code:
```
import numpy as np
arr = np.array([0, 1, 2, 0, 3, 0])
new_arr = np.where(arr == 0, 1, arr)
print(new_arr)
```
This code will output:
```
[1 1 2 1 3 1]
```
In this code, the `np.where()` function takes three arguments: the condition to test (`arr == 0`), the value to replace with if the condition is true (`1`), and the value to keep if the condition is false (`arr`). This replaces all occurrences of 0 with 1 in the `arr` array.