def single(y):
    return linkage(y, method='single', metric='euclidean')
Given a list of atoms, return a list of which are already installed.
dataset/ETHPy150Open scipy/scipy/scipy/cluster/hierarchy.py/single--crossover with--dataset/ETHPy150Open ros-infrastructure/rosdep/src/rosdep2/platforms/gentoo.py/portage_detect