[Numpy-discussion] conversion to complex

[Eric Hagemann]

I have an array of floats that is an interleaved stream of complex (real/imag) values that I want to promote to complex.  My current method uses the following

a=array([1,2,3,4])

b = a[0:4:2] + cmath.sqrt(-1)*a[1:4:2]

Is there a more elegant way ?  I am hoping to avoid explicit for loops etc
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