import numpy
result = numpy.dot( numpy.array(A)[:,0], B)
http://docs.scipy.org/doc/numpy/reference/
如果您想不使用numpy,请尝试
sum( [a[i][0]*b[i] for i in range(len(b))] )
计算点积的pythonic方法是什么?
import numpy
result = numpy.dot( numpy.array(A)[:,0], B)
http://docs.scipy.org/doc/numpy/reference/
如果您想不使用numpy,请尝试
sum( [a[i][0]*b[i] for i in range(len(b))] )