"""
The module contains the conversion functions to be
used by the rpy2.robjects functions and methods.

These functions are by default empty place-holders,
raising a NotImplementedError exception.
"""

def ri2py(obj):
    """ Dummy function for ri2py """
    raise NotImplementedError("Conversion function undefined")

def py2ri(obj):
    """ Dummy function for py2ri """
    raise NotImplementedError("Conversion function undefined")

def py2ro(obj):
    """ Dummy function for py2ro """
    raise NotImplementedError("Conversion function undefined")