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-rw-r--r--ryu/lib/packet/packet_utils.py6
1 files changed, 3 insertions, 3 deletions
diff --git a/ryu/lib/packet/packet_utils.py b/ryu/lib/packet/packet_utils.py
index e797e6e2..3839e69c 100644
--- a/ryu/lib/packet/packet_utils.py
+++ b/ryu/lib/packet/packet_utils.py
@@ -113,11 +113,11 @@ def fletcher_checksum(data, offset):
pos = 0
length = len(data)
data = bytearray(data)
- data[offset:offset+2] = [0]*2
+ data[offset:offset + 2] = [0] * 2
while pos < length:
tlen = min(length - pos, _MODX)
- for d in data[pos:pos+tlen]:
+ for d in data[pos:pos + tlen]:
c0 += d
c1 += c0
c0 %= 255
@@ -132,5 +132,5 @@ def fletcher_checksum(data, offset):
y -= 255
data[offset] = x
- data[offset+1] = y
+ data[offset + 1] = y
return (x << 8) | (y & 0xff)