Format scatterhash.py

scatterhash.py

@@ -17,30 +17,27 @@ def even_select(N, M):
         q, r = divmod(N, M)
         indices = [q*i + min(i, r) for i in range(M)]
         cut[indices] = False
-
     return cut
 
 def get_offsets(blocksize, blockcount,blocks_to_hash):
-    selection=even_select(blockcount,blocks_to_hash)
+    selection = even_select(blockcount,blocks_to_hash)
     for i in range(0,blockcount):
-        if selection[i]==0:
-            offset=int(blocksize*i)
+        if selection[i] == 0:
+            offset = int(blocksize*i)
             yield offset
 
-
 def get_hash(file,hashalgo,spread):
     h=hashlib.new(hashalgo)
-    filesize=os.path.getsize(file.name)
-    blocksize=h.block_size*65535
-    blockcount=math.ceil(filesize/blocksize)
-    blocks_to_hash=math.ceil(blockcount*spread/100)
+    filesize = os.path.getsize(file.name)
+    blocksize = h.block_size*65535
+    blockcount = math.ceil(filesize/blocksize)
+    blocks_to_hash = math.ceil(blockcount*spread/100)
     if filesize>blocksize:
         for of in get_offsets(blocksize,blockcount,blocks_to_hash):
             infile.seek(of)
             h.update(file.read(blocksize))
     else:
         h.update(file.read(blocksize))
-
     result="{};{};{};{};{}".format(h.hexdigest(),spread,filesize,hashalgo,file.name)
     return result
 
@@ -48,10 +45,10 @@ parser = argparse.ArgumentParser(description='Sparsly hash large files. Only a g
 parser.add_argument('-p',metavar='N', action="store",dest="spread",type=int, nargs='?',default=10,help='percentage of file to hash. 0 < N < 100 (default=10)')
 parser.add_argument('-c', action="store",dest="hashalgo",nargs='?',default="md5",help='select an hashalgorithm (default=md5)')
 parser.add_argument('file', type=argparse.FileType('rb'), nargs='+')
-args=parser.parse_args()
+args = parser.parse_args()
 
-hashalgo=args.hashalgo
-spread=args.spread
+hashalgo = args.hashalgo
+spread = args.spread
 for infile in args.file:
-    hashvalue=get_hash(infile,hashalgo,spread)
+    hashvalue = get_hash(infile,hashalgo,spread)
     print(hashvalue)