I’m trying to call a C++ function from PyROOOT that takes somewhat annoying arguments:
void foo( std::vector<std::vector >* a, std::vector<std::vector >* b)
The first argument I can build via
li = [3.,5.]
a = ROOT.std.vector( ROOT.std.vector( float ))()
for x in li:
tmp = ROOT.std.vector( float )()
The second argument however troubles me. Python has no built-in unsigned type (as far as I know), when I try to use ctypes.c_uint the program fails with:
AttributeError: type object ‘ROOT’ has no attribute ‘vector<c_ulong>’ (well - I would not have expected dictionaries for the ctypes).
Trying array.array(“I”) fails for the same reason
Is there any datatype I could use for this?