Thanks! Cause I need sorted returnd list, and the arbitrary list makes the
other procedure go wrong. Maybe the I/O speed is more important in other
cases.
On Mar 1, 2013 4:55 PM, Chris Rebert c...@rebertia.com wrote:
On Fri, Mar 1, 2013 at 12:43 AM, Honghe Wu leopards...@gmail.com wrote:
env: python 2.7.3
6 test files' name in a directory as below:
12ab Abc Eab a1bc acd bc
the following is test code:
for root, dirs, files in os.walk(os.getcwd()):
print files
the output in win32 platform is:
['12ab', 'a1bc', 'Abc', 'acd', 'bc', 'Eab']
but in linux is：
['Eab', 'acd', 'a1bc', '12ab', 'bc', 'Abc' ]
they are so different. a bug?
Nope. When os.walk() fetches a listing of the contents of a directory,
it internally uses os.listdir() (or a moral equivalent thereof). The
docs for os.listdir() state that The [returned] list is in arbitrary
order.. The order is dependent on the OS and filesystem, and likely
also more obscure factors (e.g. the order in which the files were
created). The lack of any required ordering allows for improved I/O
performance in many/most cases.
Cheers,
Chris
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