pyExcelerator big integer values

[Gacha]

I use pyExcelerator to import some data from xml file. One column
contains integer values like:
4750456000708
4750456000715
4750456000333
...
But when I do import the pyExcelerator converts them to something like
this:
4.7504560002e+12
4.7504560007e+12
4.7504560007e+12
4.7504560003e+12

How I understand it's because the integer value is too big. If the type
of the items was string, then all would be fine, but I can't control
the file content.

The question is, how can I import the integers in normal format.