search
Search
Unlock 100+ guides
search toc
close
Outline
Cancel
Post
account_circle
Profile
exit_to_app
Sign out
What does this mean?
Why is this true?
Give me some examples!
search
keyboard_voice
close
Searching Tips
Search for a recipe:
"Creating a table in MySQL"
Search for an API documentation: "@append"
Search for code: "!dataframe"
Apply a tag filter: "#python"
Useful Shortcuts
/ to open search panel
Esc to close search panel
to navigate between search results
d to clear all current filters
Enter to expand content preview
Doc Search
Code Search Beta
SORRY NOTHING FOUND!
mic
Start speaking...
Voice search is only supported in Safari and Chrome.
Shrink
Navigate to

# Checking whether a NumPy array contains a given row

schedule Aug 10, 2023
Last updated
local_offer
PythonNumPy
Tags
expand_more
mode_heat
Master the mathematics behind data science with 100+ top-tier guides
Start your free 7-days trial now!

To check whether a NumPy array contains an instance of a particular row we can use the `tolist(~)` method.

# Example

Consider the following 2D array:

``` np.array([[5,6],[7,8]]) array([[5, 6], [7, 8]]) ```

To check whether the above array contains the row `[5,6]`, first we convert the NumPy array to a standard Python list using `tolist(~)`:

``` a = np.array([[5,6],[7,8]])a.tolist() [[5, 6], [7, 8]] ```

Next we use the `in` operator to check whether `[5,6]` is part of the converted Python list:

``` [5,6] in a.tolist() True ```

Here we can see that `[5,6]` is indeed a row in the original array.

Edited by 0 others
thumb_up
thumb_down
Comment
Citation
Ask a question or leave a feedback...
thumb_up
1
thumb_down
0
chat_bubble_outline
0
settings
Enjoy our search
Hit / to insta-search docs and recipes!