Hint to David Hernandez

recurse_to_jpg.py

import os
from PIL import Image

# Prefer the r"xxx" notation when you have backslashes
pathe =  r"C:\David\"
for (path, dirs, files) in os.walk(pathe):
    print path
    print dirs
    print files
    for archivo in files:
        print os.path.abspath(archivo)
        f, e = os.path.splitext(archivo)
        # We should ignore .jpg files to avoid IO errors and others
        if e.lower() in ('.jpg', '.jpeg'):
            continue
        # Make the path of outfile otherwise it goes to root
        infile = os.path.join(path, archivo)
        outfile = os.path.join(path, f + ".jpg")
        # There may be errors when stuffing images
        try:
            im = Image.open(infile)
            im.save(outfile)
        except Exception as exc:
            print "Error when transforming", infile
            print exc
    print "--"