Am I missing something basic, or is this the canonical way:
with open(filename,"rb") as f:
buf = f.read(10000)
while len(buf) > 0
# do something....
buf = f.read(10000)
That will certainly do. Since read() should simply return a
0-length string when you're sucking air, you can just use the
test "while buf" instead of "while len(buf) > 0".
However, if you use it multiple places, you might consider
writing an iterator/generator you can reuse:
def chunk_file(fp, chunksize=10000):
s = fp.read(chunksize)
while s:
yield s
s = fp.read(chunksize)
with open(filename1, 'rb') as f:
for portion in chunk_file(f):
do_something_with(portion)
with open(filename2, 'rb') as f:
for portion in chunk_file(f, 1024):
do_something_with(portion)
-tkc
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