trouble with strip level with git patches

[Trophime]

Hi,
I have created patches using let's say git format-patch -1
To apply the patch using regular patch command line I apply: patch -p1 < patch

When trying to use instead patch.py I've tried
patch.py -p1 -- < patch
It fails

You have to apply: -p0 to get patch.py to work
This is very disturbing behaviour...
Would it be possible to use the same strip level as in regular patch

Best