python csv file data simple handler.

I made simple class witch is to handle element datas in csv file.

Basically, we can get elements by indexing.
For example) Get first line row data, or 2~3 line row data.

And we also can get some part of elements in csv.
For example) row 2~3 and col 2~4.

refer to this image

And we can save new csv file.

Actually, I made this class for handle MNIST data file.
And the source code uploaded in GitHub repository.
I hope someone updated this code.
Anyone can do contributor.

And I hope to help this code to someone. ^^