On 24/05/2017 16:41, Peter Otten wrote:
Dennis Lee Bieber wrote:
On Tue, 23 May 2017 21:42:45 +0100, bartc <b...@freeuk.com> declaimed the
following:
Is it necessary to sort them? If XXX is known, then presumably the first
file will be called XXX_chunk_0, the next XXX_chunk_1 and so on.
XXX_chunk_1
XXX_chunk_10
XXX_chunk_2
This is a problem you run into if you do sort the filenames (the wrong way,
alphabetically). If I understand Bart correctly he suggests something like
with open(DESTFILE, "wb") as outstream:
for filename in map("XXX_chunk_{}".format, itertools.count()):
try:
with open(filename, "rb") as instream:
shutil.copyfileobj(instream, outstream)
except FileNotFoundError:
break
Yes, that sort of thing, provided the first file end with _0, XXX is
known, and the endings are consecutive and well-formed. I was going to
post some code but wasn't sure how 'with' dealt with file errors:
i = 0
while 1:
file = "XXX_chunk_"+str(i)
print (file)
with open(file) as inf:
....
i += 1
--
bartc
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