freeCodeCamp/curriculum/challenges/english/08-data-analysis-with-python/numpy/accessing-and-changing-elements,-rows,-columns.md
Oliver Eyton-Williams ee1e8abd87
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>
2021-01-12 19:31:00 -07:00

599 B

id, title, challengeType, videoId, dashedName
id title challengeType videoId dashedName
5e9a0a8e09c5df3cc3600ed4 Accessing and Changing Elements, Rows, Columns 11 v-7Y7koJ_N0 accessing-and-changing-elements-rows-columns

--question--

--text--

What code would change the values in the 3rd column of both of the following Numpy arrays to 20?

a = np.array([[1, 2, 3, 4, 5], [6, 7, 8, 9, 10]])

# Output:
# [[ 1  2  20  4  5]
# [ 6  7 20  9 10]]

--answers--

a[:, 3] = 20

a[2, :] = 20

a[:, 2] = 20

a[1, 2] = 20

--video-solution--

3