def _popen(cmd):
    p = Popen(cmd, shell=True, stdout=PIPE, stderr=PIPE, close_fds=os.name != 'nt', universal_newlines=True)
    return p.communicate()
Compute the norm diff with the original matrix, when randomized
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/core/management/commands/makemessages.py/_popen--crossover with--dataset/ETHPy150Open scikit-learn/scikit-learn/benchmarks/bench_plot_randomized_svd.py/norm_diff