PPMA_IO is a Python library which reads and writes files in the ASCII PPM (Portable Pixel Map) format for 2D color graphics information.
There are many graphics programs, such as XV and GIMP, that can display images in this format, or translate them to other formats such as BMP, GIF, JPEG, MacPaint, X Window, and so on.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
PPMA_IO is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.
PGMA_IO, a Python library which handles the ASCII Portable Gray Map (PGM) format.
You can go up one level to the Python source codes.