TypeError cannot perform reduce with flexible type

Question

I have been using the scikit-learn library  I m trying to use the Gaussian Naive Bayes Module under the scikit-learn library but I m running into the following error  TypeError  cannot perform reduce with flexible type  Below is the code snippet    training   GaussianNB   training   training fit trainData  target  prediction   training predict testData    This is target    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    ALL    AML    AML    AML    AML    AML    AML    AML    AML    AML    AML    AML     This is trainData     -214   -153   -58        36   191   -37     -139   -73   -1        11   76   -14     -76   -49   -307        41   228   -41           -32   -49   49        -26   133   -32     -124   -79   -37        39   298   -3     -135   -186   -70        -12   790   -10      Below is the stack trace  Traceback  most recent call last   File  prediction py   line 90  in  lt module gt    gaussianNaiveBayes   File  prediction py   line 76  in gaussianNaiveBayes   training   training fit trainData  target  File   Library Python 2 7 site-packages sklearn naive bayes py   line 163  in fit   self theta  i       np mean Xi  axis 0  File   System Library Frameworks Python framework Versions 2 7 Extras lib python numpy  core fromnumeric py   line 2716  in mean   out out  keepdims keepdims  File   System Library Frameworks Python framework Versions 2 7 Extras lib python numpy core  methods py   line 62  in  mean   ret   um add reduce arr  axis axis  dtype dtype  out out  keepdims keepdims  TypeError  cannot perform reduce with flexible type

User · Answer

It looks like your  trainData  is a list of strings     -214   -153   -58        36   191   -37     Change your  trainData  to a numeric type    import numpy as np  np array   1   2   3    astype np float

User · Answer

When your are trying to apply prod on string type of value like    -214   -153   -58        36   191   -37    you will get the error  Solution  Append only integer value like  1 2 3   and you will get your expected output  If the value is in string format before appending then  in the array you can convert the type into int type and store it in a list

[python] TypeError: cannot perform reduce with flexible type

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