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Date: Mon, 2 Mar 2015 12:04:46 +0545
Subject: Md5 is different in Windows and Linux
From: Sarvagya Pant <sarvagya.pant@gmail.com>
To: python-list@python.org
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Hello, I am amazed that the  md5 of a file given by python in windows is
different than that of linux. Consider the following code:

import hashlib
def md5_for_file(f, block_size=2**20):
    md5 = hashlib.md5()
    while True:
        data = f.read(block_size)
        if not data:
            break
        md5.update(data)
    return md5.hexdigest()

f = open("somefile.txt")
print md5_for_file(f)

When I run the program I get the checksum value:
2f9cc8da53ee89762a34702f745d2956

But on this site http://onlinemd5.com/ and on linux it has value
E10D4E3847713472F51BC606852712F1.

Why is there difference in value of Checksum computed by python in windows
and other system.?

-- 
*sarvagya*

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:comic sa=
ns ms,sans-serif">Hello, I am amazed that the=C2=A0 md5 of a file given by =
python in windows is different than that of linux. Consider the following c=
ode:<br><br>import hashlib<br>def md5_for_file(f, block_size=3D2**20):<br>=
=C2=A0=C2=A0=C2=A0 md5 =3D hashlib.md5()<br>=C2=A0=C2=A0=C2=A0 while True:<=
br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 data =3D f.read(block_size)<b=
r>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if not data:<br>=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 break<br>=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 md5.update(data)<br>=C2=A0=C2=A0=C2=A0 re=
turn md5.hexdigest()<br><br>f =3D open(&quot;somefile.txt&quot;)<br>print m=
d5_for_file(f)<br><br></div><div class=3D"gmail_default" style=3D"font-fami=
ly:comic sans ms,sans-serif">When I run the program I get the checksum valu=
e: 2f9cc8da53ee89762a34702f745d2956<br><br>But on this site <a href=3D"http=
://onlinemd5.com/">http://onlinemd5.com/</a> and on linux it has value E10D=
4E3847713472F51BC606852712F1.<br><br></div><div class=3D"gmail_default" sty=
le=3D"font-family:comic sans ms,sans-serif">Why is there difference in valu=
e of Checksum computed by python in windows and other system.?<br clear=3D"=
all"></div><br>-- <br><div class=3D"gmail_signature"><i>sarvagya</i></div>
</div>

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