IndexError: invalid index to scalar variable

Question

I have created the following function:

def c_min(a,b):
    result= [x - y for x in a for y in b]
    min=np.min(result)
    return min

I have created a test file with two lists:

a=[1,2,3] and b=[4,5,6]

When I running the function I get the correct result.

However when I run the function in my initial code I have the aforementioned in the title error. Have to be noted that the function in the initial code is applied in two arrays. One has size 1 and it is numpy.float64,the other 3 and it is numpy.ndarray. Why it can be applied to list and not in the arrays?

Can you post the inputs that are raising this error?

Ashwini Chaudhary
– Ashwini Chaudhary

2014-11-05 13:09:19 +00:00
Commented Nov 5, 2014 at 13:09 — Ashwini Chaudhary
– Ashwini Chaudhary, Commented Nov 5, 2014 at 13:09
you can't iterate scalars

wim
– wim

2014-11-05 13:15:30 +00:00
Commented Nov 5, 2014 at 13:15 — wim
– wim, Commented Nov 5, 2014 at 13:15

damienfrancois · Accepted Answer · 2014-11-05 13:17:12Z

1

Both a and b need to be numpy.ndarray. If one of them is a scalar, the for ... in ... construct will fail.

answered Nov 5, 2014 at 13:17

damienfrancois

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Comments

DimKoim · Accepted Answer · 2014-11-06 13:40:49Z

0

As mentioned in the post using the numpy.arrayor numpy.ndarraythe problem can be solved.

answered Nov 6, 2014 at 13:40

DimKoim

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