测试运行时间

测试numpy的安装是否优化

%pylab
from  datetime  import datetime

n  = 2000
t1 = datetime.now()
U,D,V = svd(randn(n,n)) 
# U,D,V = svd(np.arange(n*n).reshape(n,n))
dt = datetime.now() - t1
dt.total_seconds()

转载于:https://www.cnblogs.com/bregman/p/4774918.html