SciPy

scipy.linalg.blas.dnrm2

scipy.linalg.blas.dnrm2 = <fortran dnrm2>
dnrm2 - Function signature:
n2 = dnrm2(x,[n,offx,incx])
Required arguments:
x : input rank-1 array(‘d’) with bounds (*)
Optional arguments:
n := (len(x)-offx)/abs(incx) input int offx := 0 input int incx := 1 input int
Return objects:
n2 : float