new to python, help please !!

Thu Nov 12 06:48:12 EST 2015

On 2015年11月12日 08:21, Marko Rauhamaa wrote:
> And if you really wanted to compare two files that are known to
> contain MD5 checksums, the simplest way is:
>> with open('f1.md5') as f1, open('f2.md5') as f2:
> if f1.read() == f2.read():
> ...
> else:
> ...

Though that suffers if the files are large. Might try
 CHUNK_SIZE = 4 * 1024 # read 4k chunks
 # chunk_offset = 0
 with open('f1.md5') as f1, open('f2.md5') as f2:
 while True:
 c1 = f1.read(CHUNK_SIZE)
 c2 = f2.read(CHUNK_SIZE)
 if c1 or c2:
 # chunk_offset += 1
 if c1 != c2:
 not_the_same(c1, c2)
 # not_the_same(chunk_offset * CHUNK_SIZE, c1, c2)
 break
 else: # EOF
 the_same()
 break
which should perform better if the files are huge
-tkc