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Martin C
Martin C

Reputation: 85

numpy intersect1d unexpected keyword argument 'return_indices'

Does anyone understand what I am doing wrong with the numpy intersect1d function ?

import numpy as np 
x = np.array([1, 1, 2, 3, 4])
y = np.array([2, 1, 4, 6])
xy, x_ind, y_ind = np.intersect1d(x, y, return_indices=True)

and I get this output error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: intersect1d() got an unexpected keyword argument 'return_indices'

I am using Python 3.6

Thanks

Upvotes: 0

Views: 1332

Answers (1)

Tirtha
Tirtha

Reputation: 738

It is not a problem with your Python version but the Numpy version. I executed your code with a perfectly reasonable result i.e. it did not generate the error.

import numpy as np 
x = np.array([1, 1, 2, 3, 4])
y = np.array([2, 1, 4, 6])
xy, x_ind, y_ind = np.intersect1d(x, y, return_indices=True)

print(xy)
print(x_ind)
print(y_ind)

>>
[1 2 4]
[0 2 4]
[1 0 2]

Upvotes: 1

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