62 lines
1022 B
Markdown
62 lines
1022 B
Markdown
---
|
|
id: 5e9a093a74c4063ca6f7c156
|
|
title: Numpy 布尔值的数组
|
|
challengeType: 11
|
|
videoId: N1ttsMmcVMM
|
|
bilibiliIds:
|
|
aid: 208091324
|
|
bvid: BV1Qh411p7V8
|
|
cid: 409012711
|
|
dashedName: numpy-boolean-arrays
|
|
---
|
|
|
|
# --description--
|
|
|
|
*在视频中我们使用的编辑器工具是在 notebook.ai 这个平台，你也可以选择用其他的平台，比如说 Google Colab 也是一个不错的选择。*
|
|
|
|
以下有更多的资料：
|
|
|
|
- [在 GitHub 平台的 Notebooks](https://github.com/ine-rmotr-curriculum/freecodecamp-intro-to-numpy)
|
|
- [如何使用 Google Colab 来打开 GitHub 上的 Notebooks](https://colab.research.google.com/github/googlecolab/colabtools/blob/master/notebooks/colab-github-demo.ipynb)
|
|
|
|
# --question--
|
|
|
|
## --text--
|
|
|
|
以下代码会打印出什么？
|
|
|
|
```py
|
|
a = np.arange(5)
|
|
|
|
print(a <= 3)
|
|
```
|
|
|
|
## --answers--
|
|
|
|
```python
|
|
[False, False, False, False, True]
|
|
```
|
|
|
|
---
|
|
|
|
```python
|
|
[5]
|
|
```
|
|
|
|
---
|
|
|
|
```python
|
|
[0, 1, 2, 3]
|
|
```
|
|
|
|
---
|
|
|
|
```python
|
|
[True, True, True, True, False]
|
|
```
|
|
|
|
## --video-solution--
|
|
|
|
4
|
|
|