For this program:
def reverse(data):
for index in range(len(data)-1, -1, -1):
yield data[index]
r = reverse("golf")
for char in r:
print char
I'm wondering if the line:
r = reverse("golf")
"demands" the contents of the function reverse() all at once and if I
must write
for char in reverse("golf"):
print char
if I want the results streamed instead of generated complely.
** CONTEXT **
The simple example above is not what I am really doing. My real
program parses very large
data files using pyparsing. Pyparsing can generate incremental/yielded
results with no problem:
http://pyparsing.wikispaces.com/message/view/home/248539#248852
but because I believe in injection of control (pushing data around as
opposed to having
the target pull it), I get the parse and then inject it into the
generator:
parse = parsing.parse(fp.read())
txt = textgen.generate(self.storage.output, patent_key,
parse, f.basename(), debug=False)
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