don't use lambdas as simple wrappers

Author: tomato42

src/ecdsa/test_keys.py

@@ -769,8 +769,8 @@ def test_deterministic_sign_that_rises_S_zero_error(self):
 verifiers = []
 for modifier, fun in [
     ("bytes", lambda x: x),
-    ("bytes memoryview", lambda x: buffer(x)),
-    ("bytearray", lambda x: bytearray(x)),
+    ("bytes memoryview", buffer),
+    ("bytearray", bytearray),
     ("bytearray memoryview", lambda x: buffer(bytearray(x))),
     ("array.array of bytes", lambda x: array.array("B", x)),
     ("array.array of bytes memoryview", lambda x: buffer(array.array("B", x))),

src/ecdsa/test_malformed_sigs.py

@@ -289,15 +289,13 @@ def st_der():
         | st_der_octet_string(max_size=1024**2)
         | st_der_null()
         | st_der_oid(),
-        lambda children: st.builds(
-            lambda x: encode_octet_string(x), st.one_of(children)
-        )
+        lambda children: st.builds(encode_octet_string, st.one_of(children))
         | st.builds(lambda x: encode_bitstring(x, 0), st.one_of(children))
         | st.builds(
             lambda x: encode_sequence(*x), st.lists(children, max_size=200)
         )
         | st.builds(
-            lambda tag, x: encode_constructed(tag, x),
+            encode_constructed,
             st.integers(min_value=0, max_value=0x3F),
             st.one_of(children),
         ),