### Question :

Python Numpy TypeError: ufunc ‘isfinite’ not supported for the input types

Here’s my code:

```
def topK(dataMat,sensitivity):
meanVals = np.mean(dataMat, axis=0)
meanRemoved = dataMat - meanVals
covMat = np.cov(meanRemoved, rowvar=0)
eigVals,eigVects = np.linalg.eig(np.mat(covMat))
```

I get the error in the title on the last line above. I suspect has something to do with the datatype, so, here’s an image of the variable and datatype from the Variable Explorer in Spyder:

I’ve tried changing **np.linalg.eig(np.mat(covMat))** to **np.linalg.eig(np.array(np.mat(covMat)))** and to **np.linalg.eig(np.array(covMat))**, nothing works. Any ideas? (an example would be great!)

##
Answer #1:

Your array has a `dtype`

of `object`

, but this should be some floating point `dtype`

. Use e.g.

```
covMat = np.array(covMat, dtype=float)
```

to convert the `dtype`