import yoda
def patch(path, ao):
    # fix bin widths
    if "TOPAZ_1993_I361661" in path and ("d01" in path or "d02" in path or "d03" in path) :
        for i in range(0,len(ao.points())) :
            if(i!=len(ao.points())-1) :
                xupp = 0.5*(ao.points()[i+1].x()-ao.points()[i].x())
            if(i!=0) :
                xlow = 0.5*(ao.points()[i].x()-ao.points()[i-1].x())
            if(i==0) :
                xlow=xupp
            elif(i==len(ao.points())-1) :
                xlow=xupp
            ao.points()[i].setXErrs((xlow,xupp))
    return ao