columns, a Python code which copies columns clo:chi from a text file to a new text file.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
columns is available in a Python version
file_name_sequence, a Python code which demonstrates ways to generate a sequence of filenames that can be used when generating images for an animation.
filum, a Python code which works with information in text files.