diff --git a/exercises/sum-of-multiples/sum_of_multiples.py b/exercises/sum-of-multiples/sum_of_multiples.py
index 73ceab9e7e..3975844074 100644
--- a/exercises/sum-of-multiples/sum_of_multiples.py
+++ b/exercises/sum-of-multiples/sum_of_multiples.py
@@ -1,2 +1,2 @@
-def sum_of_multiples():
+def sum_of_multiples(limit, multiples):
     pass
diff --git a/exercises/tournament/tournament.py b/exercises/tournament/tournament.py
index acfd963545..4d30eb797e 100644
--- a/exercises/tournament/tournament.py
+++ b/exercises/tournament/tournament.py
@@ -1,2 +1,2 @@
-def tally(data):
+def tally(results):
     pass
diff --git a/exercises/transpose/transpose.py b/exercises/transpose/transpose.py
index 20ce9f12a4..09054a1821 100644
--- a/exercises/transpose/transpose.py
+++ b/exercises/transpose/transpose.py
@@ -1,2 +1,2 @@
-def transpose():
+def transpose(matrix):
     pass
diff --git a/exercises/triangle/triangle.py b/exercises/triangle/triangle.py
index f9544b1e18..db4d97fddf 100644
--- a/exercises/triangle/triangle.py
+++ b/exercises/triangle/triangle.py
@@ -3,5 +3,8 @@ class TriangleError(Exception):
 
 
 class Triangle(object):
-    def __init__(self):
+    def __init__(self, x, y, z):
+        pass
+
+    def kind(self):
         pass
diff --git a/exercises/trinary/trinary.py b/exercises/trinary/trinary.py
index cb41044110..d3333ba0fd 100644
--- a/exercises/trinary/trinary.py
+++ b/exercises/trinary/trinary.py
@@ -1,2 +1,2 @@
-def trinary():
+def trinary(trinary_string):
     pass
diff --git a/exercises/twelve-days/twelve_days.py b/exercises/twelve-days/twelve_days.py
index 0d17418086..fc93f2ab04 100644
--- a/exercises/twelve-days/twelve_days.py
+++ b/exercises/twelve-days/twelve_days.py
@@ -1,8 +1,8 @@
-def verse():
+def verse(verse_number):
     pass
 
 
-def verses():
+def verses(start_verse, end_verse):
     pass
 
 
diff --git a/exercises/two-fer/two_fer.py b/exercises/two-fer/two_fer.py
index e75f4e565c..69facce636 100644
--- a/exercises/two-fer/two_fer.py
+++ b/exercises/two-fer/two_fer.py
@@ -1,2 +1,2 @@
-def two_fer():
+def two_fer(name=""):
     pass
diff --git a/exercises/variable-length-quantity/variable_length_quantity.py b/exercises/variable-length-quantity/variable_length_quantity.py
index 2536c2e670..28a7e9e93c 100644
--- a/exercises/variable-length-quantity/variable_length_quantity.py
+++ b/exercises/variable-length-quantity/variable_length_quantity.py
@@ -1,6 +1,6 @@
-def encode():
+def encode(numbers):
     pass
 
 
-def decode():
+def decode(bytes):
     pass
diff --git a/exercises/word-count/word_count.py b/exercises/word-count/word_count.py
index d1741341da..038cea7307 100644
--- a/exercises/word-count/word_count.py
+++ b/exercises/word-count/word_count.py
@@ -1,2 +1,2 @@
-def word_count():
+def word_count(sentence):
     pass
diff --git a/exercises/wordy/wordy.py b/exercises/wordy/wordy.py
index e765101584..9e64a1495f 100644
--- a/exercises/wordy/wordy.py
+++ b/exercises/wordy/wordy.py
@@ -1,2 +1,2 @@
-def calculate():
+def calculate(statement):
     pass