I have a datframe with 4 columns of strings and others as integers. Now I need to find out those rows of data where at least one of the column is a non-zero value (or > 0).

```
manwra,sahAyaH,T7,0,0,0,0,T
manwra, akriti,T5,0,0,1,0,K 
awma, prabrtih,B6, 0,1,1,0,S

```

My output should be

```
manwra, akriti,T5,0,0,1,0,K 
awma, prabrtih,B6, 0,1,1,0,S

```

I have tried the following to obtain the answer. The string values are in colums 0,1,2 and -1 (last column).

```
KT[KT.ix[:,3:-2] != 0]

```

What I am receiving as output is 

```
NaN,NaNNaN,NaN,NaN,NaN,NaN,NaN
NaN,NaN,NaN,NaN,NaN,1,NaN,NaN
NaN,NaN,NaN,NaN,1,1,NaN,NaN

```

How to obtain the desired output