Hi all,

I am trying to write a list of complex numbers to a csv file. The list looks like:

cpl1 = [(-6.4703169037894082e-12-2.7429131015110908e-12j), (-9.0688415110840026e-11+1.7513018812920222e-11j), (-1.8522787470498514e-10+1.3074128585310874e-11j), (-5.8563154325952382e-10-6.4430377699764563e-10j), (2.1451734832922398e-10-9.987741744765799e-10j), (2.9095870157647141e-10-6.3227384439201728e-10j), (1.9448214150230569e-09+5.1612969453884716e-10j)]

The complex numbers are to be written to file to look like:

real, imaginary, real, imaginary, real, imaginary, ...etc

To do this I would use the following code

(PLEASE NOTE THIS IS ONLY A SUMMARY OF A VERY LONG CODE.

IT IS ONLY MEANT AS A GUIDE.):

```
#information taken from external file
f = csv.writer(open("cplx.csv", "wb"))
cpl1 = []
#CODE THAT CREATES cpl1 using info from external file. It is far too long to post here.
f.writerow([str(np.real(cpl1[0])),str(np.imag(cpl1[0])),str(np.real(cpl1[1])),str(np.imag(cpl1[1])),str(np.real(cpl1[2])),str(np.imag(cpl1[2])),str(np.real(cpl1[3])),str(np.imag(cpl1[3])),str(np.real(cpl1[4])),str(np.imag(cpl1[4])),str(np.real(cpl1[5])),str(np.imag(cpl1[5])),str(np.real(cpl1[6])),str(np.imag(cpl1[6])),str(np.real(cpl1[7])),str(np.imag(cpl1[7]))])
#After writing the code loops
```

This works fine for subsequent complex numbers of a constant length.

However in my present case the subsequently generated complex numbers are of different lengths (this is set by an external file).

Taking into account the variability of the subsequent length of cpl1 is giving me the most problems.

Any ideas will be appreciated.

cheers,

h