def shout(msg, f=sys.stderr):
    print >> f, "{0}: {1}".format(_PROG, msg)
    f.flush()
Makes sure a link is fully encoded.  That is, if a ' ' shows up in
dataset/ETHPy150Open axialmarket/fsq/libexec/fsq/rm-host.py/shout--crossover with--dataset/ETHPy150Open GeekTrainer/Flask/Work/Trivia - Module 5/env/Lib/site-packages/pip/index.py/HTMLPage.clean_link