diff --git a/ed25519.py b/ed25519.py
index 0dbeaee..fd74fbe 100644
--- a/ed25519.py
+++ b/ed25519.py
@@ -32,7 +32,6 @@
 
 import hashlib
 
-
 __version__ = "1.0.dev0"
 
 
@@ -118,7 +117,7 @@ def edwards_add(P, Q):
 def edwards_double(P):
     # This is formula sequence 'dbl-2008-hwcd' from
     # http://www.hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
-    (x1, y1, z1, t1) = P
+    (x1, y1, z1, _) = P
 
     a = x1 * x1 % q
     b = y1 * y1 % q
@@ -183,7 +182,7 @@ def encodeint(y):
 
 
 def encodepoint(P):
-    (x, y, z, t) = P
+    (x, y, z, _) = P
     zi = inv(z)
     x = (x * zi) % q
     y = (y * zi) % q
@@ -238,11 +237,11 @@ def isoncurve(P):
 
 
 def decodeint(s):
-    return sum(2**i * bit(s, i) for i in range(0, b))
+    return sum(2**i * bit(s, i) for i in range(b))
 
 
 def decodepoint(s):
-    y = sum(2**i * bit(s, i) for i in range(0, b - 1))
+    y = sum(2**i * bit(s, i) for i in range(b - 1))
     x = xrecover(y)
     if x & 1 != bit(s, b - 1):
         x = q - x
@@ -274,8 +273,8 @@ def checkvalid(s, m, pk):
     S = decodeint(s[b // 8 : b // 4])
     h = Hint(encodepoint(R) + pk + m)
 
-    (x1, y1, z1, t1) = P = scalarmult_B(S)
-    (x2, y2, z2, t2) = Q = edwards_add(R, scalarmult(A, h))
+    (x1, y1, z1, _) = P = scalarmult_B(S)
+    (x2, y2, z2, _) = Q = edwards_add(R, scalarmult(A, h))
 
     if (
         not isoncurve(P)
diff --git a/science.py b/science.py
index a72efe4..2c57616 100644
--- a/science.py
+++ b/science.py
@@ -17,7 +17,6 @@
 
 import ed25519
 
-
 seed = os.urandom(32)
 
 data = b"The quick brown fox jumps over the lazy dog"
diff --git a/setup.py b/setup.py
index 6f3bf0d..7dbd36e 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,6 @@
 
 import ed25519
 
-
 setup(
     name="ed25519.py",
     version=ed25519.__version__,
diff --git a/test_ed25519.py b/test_ed25519.py
index a8a15eb..d86cb58 100644
--- a/test_ed25519.py
+++ b/test_ed25519.py
@@ -98,6 +98,6 @@ def test_checkparams():
     assert pow(ed25519.d, (ed25519.q - 1) // 2, ed25519.q) == ed25519.q - 1
     assert pow(ed25519.I, 2, ed25519.q) == ed25519.q - 1
     assert ed25519.isoncurve(ed25519.B)
-    x, y, z, t = P = ed25519.scalarmult(ed25519.B, ed25519.l)
+    x, y, z, _ = P = ed25519.scalarmult(ed25519.B, ed25519.l)
     assert ed25519.isoncurve(P)
     assert (x, y) == (0, z)