I have two numpy arrays. Array1 contains the wavelength value and array2 contains the flux value. array1=[5625.04152255 5625.11815852 5625.19478889 ... 6020.79150447 6020.86486562 6020.93822138] array2=[0.93763397 0.89685317 0.9532884 ... 1.0172066 0.9948189 1.00680107] The first wavelength in array1 has the first flux of array2 as its pair and I want to save them as a text file with the first line being the header names 'wavelength' and 'flux' wavelength flux 5625.04152255 0.93763397 5625.11815852 0.89685317 5625.19478889 0.9532884 Continue reading...