Files
miyaliu666 3ea2fe4f77 feat(i18n,curriculum): add Bilibili ids for Chinese (#43564)
Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
2021-10-01 09:54:12 +05:30

62 lines
918 B
Markdown

---
id: 5e9a093a74c4063ca6f7c156
title: Numpy Boolean Arrays
challengeType: 11
videoId: N1ttsMmcVMM
bilibiliIds:
aid: 208091324
bvid: BV1Qh411p7V8
cid: 409012711
dashedName: numpy-boolean-arrays
---
# --description--
*Instead of using notebooks.ai like it shows in the video, you can use Google Colab instead.*
More resources:
- [Notebooks on GitHub](https://github.com/ine-rmotr-curriculum/freecodecamp-intro-to-numpy)
- [How to open Notebooks from GitHub using Google Colab.](https://colab.research.google.com/github/googlecolab/colabtools/blob/master/notebooks/colab-github-demo.ipynb)
# --question--
## --text--
What will the following code print out?
```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