dfu-util Code

--- a/dfuse-pack.py
+++ b/dfuse-pack.py
@@ -10,7 +10,7 @@
 DEFAULT_DEVICE="0x0483:0xdf11"
 
 def named(tuple,names):
-  return dict(zip(names.split(),tuple))
+  return dict(list(zip(names.split(),tuple)))
 def consume(fmt,data,names):
   n = struct.calcsize(fmt)
   return named(struct.unpack(fmt,data[:n]),names),data[n:]
@@ -20,11 +20,11 @@
   return 0xFFFFFFFF & -zlib.crc32(data) -1
 
 def parse(file,dump_images=False):
-  print 'File: "%s"' % file
+  print('File: "%s"' % file)
   data = open(file,'rb').read()
   crc = compute_crc(data[:-4])
   prefix, data = consume('<5sBIB',data,'signature version size targets')
-  print '%(signature)s v%(version)d, image size: %(size)d, targets: %(targets)d' % prefix
+  print('%(signature)s v%(version)d, image size: %(size)d, targets: %(targets)d' % prefix)
   for t in range(prefix['targets']):
     tprefix, data  = consume('<6sBI255s2I',data,'signature altsetting named name size elements')
     tprefix['num'] = t
@@ -32,28 +32,28 @@
       tprefix['name'] = cstring(tprefix['name'])
     else:
       tprefix['name'] = ''
-    print '%(signature)s %(num)d, alt setting: %(altsetting)s, name: "%(name)s", size: %(size)d, elements: %(elements)d' % tprefix
+    print('%(signature)s %(num)d, alt setting: %(altsetting)s, name: "%(name)s", size: %(size)d, elements: %(elements)d' % tprefix)
     tsize = tprefix['size']
     target, data = data[:tsize], data[tsize:]
     for e in range(tprefix['elements']):
       eprefix, target = consume('<2I',target,'address size')
       eprefix['num'] = e
-      print '  %(num)d, address: 0x%(address)08x, size: %(size)d' % eprefix
+      print('  %(num)d, address: 0x%(address)08x, size: %(size)d' % eprefix)
       esize = eprefix['size']
       image, target = target[:esize], target[esize:]
       if dump_images:
         out = '%s.target%d.image%d.bin' % (file,t,e)
         open(out,'wb').write(image)
-        print '    DUMPED IMAGE TO "%s"' % out
+        print('    DUMPED IMAGE TO "%s"' % out)
     if len(target):
-      print "target %d: PARSE ERROR" % t
+      print("target %d: PARSE ERROR" % t)
   suffix = named(struct.unpack('<4H3sBI',data[:16]),'device product vendor dfu ufd len crc')
-  print 'usb: %(vendor)04x:%(product)04x, device: 0x%(device)04x, dfu: 0x%(dfu)04x, %(ufd)s, %(len)d, 0x%(crc)08x' % suffix
+  print('usb: %(vendor)04x:%(product)04x, device: 0x%(device)04x, dfu: 0x%(dfu)04x, %(ufd)s, %(len)d, 0x%(crc)08x' % suffix)
   if crc != suffix['crc']:
-    print "CRC ERROR: computed crc32 is 0x%08x" % crc
+    print("CRC ERROR: computed crc32 is 0x%08x" % crc)
   data = data[16:]
   if data:
-    print "PARSE ERROR"
+    print("PARSE ERROR")
 
 def build(file,targets,device=DEFAULT_DEVICE):
   data = ''
@@ -64,7 +64,7 @@
     tdata = struct.pack('<6sBI255s2I','Target',0,1,'ST...',len(tdata),len(target)) + tdata
     data += tdata
   data  = struct.pack('<5sBIB','DfuSe',1,len(data)+11,len(targets)) + data
-  v,d=map(lambda x: int(x,0) & 0xFFFF, device.split(':',1))
+  v,d=[int(x,0) & 0xFFFF for x in device.split(':',1)]
   data += struct.pack('<4H3sB',0,d,v,0x011a,'UFD',16)
   crc   = compute_crc(data)
   data += struct.pack('<I',crc)
@@ -89,15 +89,15 @@
       try:
         address,binfile = arg.split(':',1)
       except ValueError:
-        print "Address:file couple '%s' invalid." % arg
+        print("Address:file couple '%s' invalid." % arg)
         sys.exit(1)
       try:
         address = int(address,0) & 0xFFFFFFFF
       except ValueError:
-        print "Address %s invalid." % address
+        print("Address %s invalid." % address)
         sys.exit(1)
       if not os.path.isfile(binfile):
-        print "Unreadable file '%s'." % binfile
+        print("Unreadable file '%s'." % binfile)
         sys.exit(1)
       target.append({ 'address': address, 'data': open(binfile,'rb').read() })
     outfile = args[0]
@@ -105,15 +105,15 @@
     if options.device:
       device=options.device
     try:
-      v,d=map(lambda x: int(x,0) & 0xFFFF, device.split(':',1))
+      v,d=[int(x,0) & 0xFFFF for x in device.split(':',1)]
     except:
-      print "Invalid device '%s'." % device
+      print("Invalid device '%s'." % device)
       sys.exit(1)
     build(outfile,[target],device)
   elif len(args)==1:
     infile = args[0]
     if not os.path.isfile(infile):
-      print "Unreadable file '%s'." % infile
+      print("Unreadable file '%s'." % infile)
       sys.exit(1)
     parse(infile, dump_images=options.dump_images)
   else: