从积分（正交）中提取结果？

Question

考虑这个Python片段：

>>> V=quad(lambda x:sin(x),0,.456)

>>> print "V=",V; 3*V<br>

V= (0.10217888319247767, 1.1344134875077312e-15)
(0.10217888319247767, 1.1344134875077312e-15,
0.10217888319247767, 1.1344134875077312e-15,   
 0.10217888319247767, 1.1344134875077312e-15)<br>>>>

如何让V等于0.10217888319247767，这样 （例如）3 * V = .30653664957743301（即“de-tuple”）？

Answer 1

您可以像这样对元组建立索引：3*V[0]