numpy.where(condition[, x, y]) function returns the indices of elements in an input array where the given condition is satisfied.
condition : When True, yield x, otherwise yield y.
x, y : Values from which to choose. x, y and condition need to be broadcastable to some shape.
out : [ndarray or tuple of ndarrays] If both x and y are specified, the output array contains elements of x where condition is True, and elements from y elsewhere.
If only condition is given, return the tuple condition.nonzero(), the indices where condition is True.
array([[1, 6], [3, 4]])
[[1 2 3] [4 5 6]] Indices of elements <4 (array([0, 0, 0], dtype=int64), array([0, 1, 2], dtype=int64)) Elements which are <4 array([1, 2, 3])
- Python | Merge Python key values to list
- Important differences between Python 2.x and Python 3.x with examples
- Reading Python File-Like Objects from C | Python
- Python | Sort Python Dictionaries by Key or Value
- Python | Add Logging to a Python Script
- Python | Add Logging to Python Libraries
- Python | Set 4 (Dictionary, Keywords in Python)
- Python Set | pop()
- set add() in python
- Use of min() and max() in Python
- bin() in Python
- SHA in Python
- max() and min() in Python
- Any & All in Python
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.