freeCodeCamp/curriculum/challenges/chinese/08-data-analysis-with-python/numpy/what-is-numpy.md

---
id: 5e9a0a8e09c5df3cc3600ed2
title: What is NumPy
challengeType: 11
videoId: 5Nwfs5Ej85Q
dashedName: what-is-numpy
---

# --question--

## --text--

Why are Numpy arrays faster than regular Python lists?

## --answers--

Numpy does not perform type checking while iterating through objects.

---

Numpy uses fixed types.

---

Numpy uses contiguous memory.

---

All of the above.

## --video-solution--

4
fix: QA/Infosec update and python to chinese 2020-08-13 12:00:20 +02:00			`---`
			`id: 5e9a0a8e09c5df3cc3600ed2`
chore(i8n,learn): processed translations 2021-02-06 04:42:36 +00:00			`title: What is NumPy`
fix: QA/Infosec update and python to chinese 2020-08-13 12:00:20 +02:00			`challengeType: 11`
			`videoId: 5Nwfs5Ej85Q`
feat(curriculum): restore seed + solution to Chinese (#40683) * 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> 2021-01-13 03:31:00 +01:00			`dashedName: what-is-numpy`
fix: QA/Infosec update and python to chinese 2020-08-13 12:00:20 +02:00			`---`

chore(learn): Applied MDX format to Chinese curriculum files (#40462) 2020-12-16 00:37:30 -07:00			`# --question--`
fix: QA/Infosec update and python to chinese 2020-08-13 12:00:20 +02:00
chore(learn): Applied MDX format to Chinese curriculum files (#40462) 2020-12-16 00:37:30 -07:00			`## --text--`
fix: QA/Infosec update and python to chinese 2020-08-13 12:00:20 +02:00
chore(learn): Applied MDX format to Chinese curriculum files (#40462) 2020-12-16 00:37:30 -07:00			`Why are Numpy arrays faster than regular Python lists?`
fix: QA/Infosec update and python to chinese 2020-08-13 12:00:20 +02:00
chore(learn): Applied MDX format to Chinese curriculum files (#40462) 2020-12-16 00:37:30 -07:00			`## --answers--`
fix: QA/Infosec update and python to chinese 2020-08-13 12:00:20 +02:00
chore(learn): Applied MDX format to Chinese curriculum files (#40462) 2020-12-16 00:37:30 -07:00			`Numpy does not perform type checking while iterating through objects.`
fix: QA/Infosec update and python to chinese 2020-08-13 12:00:20 +02:00
chore(learn): Applied MDX format to Chinese curriculum files (#40462) 2020-12-16 00:37:30 -07:00			`---`

			`Numpy uses fixed types.`

			`---`

			`Numpy uses contiguous memory.`

			`---`

			`All of the above.`

			`## --video-solution--`

			`4`