diff --git a/contrib/pyln-proto/pyln/proto/message/array_types.py b/contrib/pyln-proto/pyln/proto/message/array_types.py
index 5e59709c8..8aeebec45 100644
--- a/contrib/pyln-proto/pyln/proto/message/array_types.py
+++ b/contrib/pyln-proto/pyln/proto/message/array_types.py
@@ -1,11 +1,11 @@
-#! /usr/bin/python3
 from .fundamental_types import FieldType, IntegerType, split_field
 
 
 class ArrayType(FieldType):
-    """Abstract class for the different kinds of arrays: these are not in
-the namespace, but generated when a message says it wants an array of
-some type.
+    """Abstract class for the different kinds of arrays.
+
+These are not in the namespace, but generated when a message says it
+wants an array of some type.
 
     """
     def __init__(self, outer, name, elemtype):
diff --git a/contrib/pyln-proto/pyln/proto/message/fundamental_types.py b/contrib/pyln-proto/pyln/proto/message/fundamental_types.py
index 7fee6cae9..e4cd53d40 100644
--- a/contrib/pyln-proto/pyln/proto/message/fundamental_types.py
+++ b/contrib/pyln-proto/pyln/proto/message/fundamental_types.py
@@ -1,4 +1,3 @@
-#! /usr/bin/python3
 import struct
 
 
@@ -42,7 +41,7 @@ These are further specialized.
         return self.name
 
     def __repr__(self):
-        return self.name
+        return 'FieldType({})'.format(self.name)
 
 
 class IntegerType(FieldType):
diff --git a/contrib/pyln-proto/pyln/proto/message/message.py b/contrib/pyln-proto/pyln/proto/message/message.py
index 7d9c512c7..0f7a00f9a 100644
--- a/contrib/pyln-proto/pyln/proto/message/message.py
+++ b/contrib/pyln-proto/pyln/proto/message/message.py
@@ -1,4 +1,3 @@
-#! /usr/bin/python3
 import struct
 from .fundamental_types import fundamental_types, BigSizeType, split_field
 from .array_types import (
diff --git a/contrib/pyln-proto/tests/test_array_types.py b/contrib/pyln-proto/tests/test_array_types.py
index e2c9247ed..6ec80c4f2 100644
--- a/contrib/pyln-proto/tests/test_array_types.py
+++ b/contrib/pyln-proto/tests/test_array_types.py
@@ -18,23 +18,23 @@ def test_sized_array():
         def __init__(self, name):
             self.name = name
 
-    for test in [[SizedArrayType(dummy("test1"), "test_arr", byte, 4),
-                  "00010203",
-                  bytes([0, 1, 2, 3])],
-                 [SizedArrayType(dummy("test2"), "test_arr", u16, 4),
-                  "[0,1,2,256]",
-                  bytes([0, 0, 0, 1, 0, 2, 1, 0])],
-                 [SizedArrayType(dummy("test3"), "test_arr", scid, 4),
-                  "[1x2x3,4x5x6,7x8x9,10x11x12]",
-                  bytes([0, 0, 1, 0, 0, 2, 0, 3]
-                        + [0, 0, 4, 0, 0, 5, 0, 6]
-                        + [0, 0, 7, 0, 0, 8, 0, 9]
-                        + [0, 0, 10, 0, 0, 11, 0, 12])]]:
-        v, _ = test[0].val_from_str(test[1])
-        assert test[0].val_to_str(v, None) == test[1]
-        v2, _ = test[0].val_from_bin(test[2], None)
+    for arrtype, s, b in [[SizedArrayType(dummy("test1"), "test_arr", byte, 4),
+                           "00010203",
+                           bytes([0, 1, 2, 3])],
+                          [SizedArrayType(dummy("test2"), "test_arr", u16, 4),
+                           "[0,1,2,256]",
+                           bytes([0, 0, 0, 1, 0, 2, 1, 0])],
+                          [SizedArrayType(dummy("test3"), "test_arr", scid, 4),
+                           "[1x2x3,4x5x6,7x8x9,10x11x12]",
+                           bytes([0, 0, 1, 0, 0, 2, 0, 3]
+                                 + [0, 0, 4, 0, 0, 5, 0, 6]
+                                 + [0, 0, 7, 0, 0, 8, 0, 9]
+                                 + [0, 0, 10, 0, 0, 11, 0, 12])]]:
+        v, _ = arrtype.val_from_str(s)
+        assert arrtype.val_to_str(v, None) == s
+        v2, _ = arrtype.val_from_bin(b, None)
         assert v2 == v
-        assert test[0].val_to_bin(v, None) == test[2]
+        assert arrtype.val_to_bin(v, None) == b
 
 
 def test_ellipsis_array():