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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