Pour md5sumer plein de fichiers

diff --git a/md5sum.py b/md5sum.py
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+#!/usr/bin/env python
+# -*- encoding: utf-8 -*-
+
+## trouvé sur http://code.activestate.com/recipes/266486/
+
+## md5hash
+##
+## 2004-01-30
+##
+## Nick Vargish
+##
+## Simple md5 hash utility for generating md5 checksums of files. 
+##
+## usage: md5hash <filename> [..]
+##
+## Use '-' as filename to sum standard input.
+
+import hashlib
+import sys
+
+def sumfile(fobj):
+    '''Returns an md5 hash for an object with read() method.'''
+    m = hashlib.md5()
+    while True:
+        d = fobj.read(8096)
+        if not d:
+            break
+        m.update(d)
+    return m.hexdigest()
+
+
+def md5sum(fname):
+    '''Returns an md5 hash for file fname, or stdin if fname is "-".'''
+    if fname == '-':
+        ret = sumfile(sys.stdin)
+    else:
+        try:
+            f = file(fname, 'rb')
+        except:
+            return 'Failed to open file'
+        ret = sumfile(f)
+        f.close()
+    return ret
+
+
+# if invoked on command line, print md5 hashes of specified files.
+if __name__ == '__main__':
+    for fname in sys.argv[1:]:
+        print '%32s  %s' % (md5sum(fname), fname)
+
+
+