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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def mfpt_sensitivity(T, target, i):
 r"""Sensitivity matrix of the mean first-passage time from specified state. Parameters T : (M, M) ndarray Transition matrix target : int or list Target state or set for mfpt computation i : int Compute the sensitivity for state `i` Returns ------- S : (M, M) ndarray Sensitivity matrix for specified state """

    # check input
    T = _types.ensure_ndarray_or_sparse(T, ndim=2, uniform=True, kind='numeric')
    target = _types.ensure_int_vector(target)
    # go
    if _issparse(T):
        _showSparseConversionWarning()
        mfpt_sensitivity(T.todense(), target, i)
    else:
        return dense.sensitivity.mfpt_sensitivity(T, target, i)