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Groups > comp.lang.python > #98701
| From | Peter Otten <__peter__@web.de> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: new to python, help please !! |
| Date | 2015-11-12 16:41 +0100 |
| Organization | None |
| Message-ID | <mailman.274.1447342924.16136.python-list@python.org> (permalink) |
| References | <93aef8e5-3d6f-41f4-a625-cd3c2007686e@googlegroups.com> <20151111110655.7293d3b7@bigbox.christie.dr> <n229b9$hh9$1@ger.gmane.org> <20151112090058.0834a645@bigbox.christie.dr> |
Tim Chase wrote:
> On 2015-11-12 15:56, Peter Otten wrote:
>> Tim Chase wrote:
>>
>> > with open("file1.md5") as a, open("file2.md5") as b:
>> > for s1, s2 in zip(a, b):
>> > if s1 != s2:
>> > print("Files differ")
>>
>> Note that this will not detect extra lines in one of the files.
>> I recommend that you use itertools.zip_longest (izip_longest in
>> Python 2) instead of the built-in zip().
>
> Yeah, I noticed that after pushing <send> but then posted a later
> version that just read chunks of the file which should catch that
> file-size difference. Or, as in that other message, prefix it with
> an fstat() check to compare file-sizes so that you don't even have to
> open the files if the sizes differ.
>
> -tkc
>>> os.path.getsize("file1.md5")
10
>>> os.path.getsize("file2.md5")
10
>>> with open("file1.md5") as a, open("file2.md5") as b:
... for s, t in zip(a, b):
... if s != t: print("different")
...
>>> from itertools import zip_longest
>>> with open("file1.md5") as a, open("file2.md5") as b:
... for s, t in zip_longest(a, b):
... if s != t: print("different")
...
different
I admit I cheated and used Python 3 ;)
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new to python, help please !! Anas Belemlih <anas.belemlih@gmail.com> - 2015-11-11 08:34 -0800
Re: new to python, help please !! John Gordon <gordon@panix.com> - 2015-11-11 16:58 +0000
Re: new to python, help please !! Tim Chase <python.list@tim.thechases.com> - 2015-11-11 11:06 -0600
Re: new to python, help please !! Ben Finney <ben+python@benfinney.id.au> - 2015-11-12 04:16 +1100
Re: new to python, help please !! Quivis <quivis@domain.invalid> - 2015-11-11 17:48 +0000
Re: new to python, help please !! Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-11-12 13:58 +1100
Re: new to python, help please !! Marko Rauhamaa <marko@pacujo.net> - 2015-11-12 08:21 +0200
Re: new to python, help please !! Tim Chase <python.list@tim.thechases.com> - 2015-11-12 05:48 -0600
Re: new to python, help please !! <paul.hermeneutic@gmail.com> - 2015-11-12 07:27 -0700
Re: new to python, help please !! Quivis <quivis@domain.invalid> - 2015-11-12 17:55 +0000
Re: new to python, help please !! Denis McMahon <denismfmcmahon@gmail.com> - 2015-11-12 19:49 +0000
Re: new to python, help please !! Peter Otten <__peter__@web.de> - 2015-11-12 15:56 +0100
Re: new to python, help please !! Tim Chase <python.list@tim.thechases.com> - 2015-11-12 09:00 -0600
Re: new to python, help please !! Peter Otten <__peter__@web.de> - 2015-11-12 16:41 +0100
Re: new to python, help please !! Denis McMahon <denismfmcmahon@gmail.com> - 2015-11-12 21:24 +0000
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