gistfile1.py

def ones(x):
    if x:
        print "1",
        return ones(x-1)

gistfile2.py

def tail(fxn):
    def _tail(fxn):
        while callable(fxn):
            fxn=fxn()
        return fxn
    return lambda x:_tail(fxn(x))
def _ones(x):
    if x:
        print "1",
        return (lambda: _ones(x-1))
ones = lambda x:tail(_ones)(x)

gistfile3.py

def compress(blocks):
    if not_empty(blocks):
      return squeeze(first(blocks))+compress(restof(blocks))