ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
58 lines
850 B
Markdown
58 lines
850 B
Markdown
---
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id: 5e9a093a74c4063ca6f7c156
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title: Numpy Boolean Arrays
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challengeType: 11
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videoId: N1ttsMmcVMM
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dashedName: numpy-boolean-arrays
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---
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# --description--
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*Instead of using notebooks.ai like it shows in the video, you can use Google Colab instead.*
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More resources:
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- [Notebooks on GitHub](https://github.com/ine-rmotr-curriculum/freecodecamp-intro-to-numpy)
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- [How to open Notebooks from GitHub using Google Colab.](https://colab.research.google.com/github/googlecolab/colabtools/blob/master/notebooks/colab-github-demo.ipynb)
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# --question--
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## --text--
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What will the following code print out?
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```py
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a = np.arange(5)
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print(a <= 3)
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```
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## --answers--
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```python
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[False, False, False, False, True]
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```
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---
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```python
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[5]
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```
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---
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```python
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[0, 1, 2, 3]
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```
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---
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```python
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[True, True, True, True, False]
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```
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## --video-solution--
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4
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