1 files changed, 24 insertions, 21 deletions

diff --git a/glucometerutils/support/lifescan_binary_protocol.py b/glucometerutils/support/lifescan_binary_protocol.py
index 288da83..441226e 100644
--- a/glucometerutils/support/lifescan_binary_protocol.py
+++ b/glucometerutils/support/lifescan_binary_protocol.py
@@ -12,48 +12,51 @@ This module implements an interface to send and receive these messages.
 import construct
 
 from glucometerutils import common
-from glucometerutils.support import construct_extras
-from glucometerutils.support import lifescan
+from glucometerutils.support import construct_extras, lifescan
 
 _LINK_CONTROL = construct.BitStruct(
     construct.Padding(3),
-    'more' / construct.Default(construct.Flag, False),
-    'disconnect' / construct.Default(construct.Flag, False),
-    'acknowledge' / construct.Default(construct.Flag, False),
-    'expect_receive' / construct.Default(construct.Flag, False),
-    'sequence_number' / construct.Default(construct.Flag, False),
+    "more" / construct.Default(construct.Flag, False),
+    "disconnect" / construct.Default(construct.Flag, False),
+    "acknowledge" / construct.Default(construct.Flag, False),
+    "expect_receive" / construct.Default(construct.Flag, False),
+    "sequence_number" / construct.Default(construct.Flag, False),
 )
 
+
 def LifeScanPacket(include_link_control):  # pylint: disable=invalid-name
     # type: (bool) -> construct.Struct
     if include_link_control:
         link_control_construct = _LINK_CONTROL
     else:
-        link_control_construct = construct.Const(b'\x00')
+        link_control_construct = construct.Const(b"\x00")
 
     return construct.Struct(
-        'data' / construct.RawCopy(
+        "data"
+        / construct.RawCopy(
             construct.Struct(
-                construct.Const(b'\x02'),  # stx
-                'length' / construct.Rebuild(
-                    construct.Byte, lambda this: len(this.message) + 6),
-                'link_control' / link_control_construct,
-                'message' / construct.Bytes(
-                    lambda this: this.length - 6),
-                construct.Const(b'\x03'),  # etx
+                construct.Const(b"\x02"),  # stx
+                "length"
+                / construct.Rebuild(construct.Byte, lambda this: len(this.message) + 6),
+                "link_control" / link_control_construct,
+                "message" / construct.Bytes(lambda this: this.length - 6),
+                construct.Const(b"\x03"),  # etx
             ),
         ),
-        'checksum' / construct.Checksum(
-            construct.Int16ul, lifescan.crc_ccitt, construct.this.data.data),
+        "checksum"
+        / construct.Checksum(
+            construct.Int16ul, lifescan.crc_ccitt, construct.this.data.data
+        ),
     )
 
+
 VERIO_TIMESTAMP = construct_extras.Timestamp(
-    construct.Int32ul, epoch=946684800)  # 2000-01-01 (not 2010)
+    construct.Int32ul, epoch=946684800
+)  # 2000-01-01 (not 2010)
 
 _GLUCOSE_UNIT_MAPPING_TABLE = {
     common.Unit.MG_DL: 0x00,
     common.Unit.MMOL_L: 0x01,
 }
 
-GLUCOSE_UNIT = construct.Mapping(
-    construct.Byte, _GLUCOSE_UNIT_MAPPING_TABLE)
+GLUCOSE_UNIT = construct.Mapping(construct.Byte, _GLUCOSE_UNIT_MAPPING_TABLE)