Fixed E731 flake8 errors

do not assign a lambda expression, use a def

2 files changed, 13 insertions, 6 deletions

diff --git a/_pytest/assertion/rewrite.py b/_pytest/assertion/rewrite.py
index 97663ccda..992002b81 100644
--- a/_pytest/assertion/rewrite.py
+++ b/_pytest/assertion/rewrite.py
@@ -39,7 +39,8 @@ ASCII_IS_DEFAULT_ENCODING = sys.version_info[0] < 3
 if sys.version_info >= (3, 5):
     ast_Call = ast.Call
 else:
-    ast_Call = lambda a, b, c: ast.Call(a, b, c, None, None)
+    def ast_Call(a, b, c):
+        return ast.Call(a, b, c, None, None)
 
 
 class AssertionRewritingHook(object):
diff --git a/_pytest/assertion/util.py b/_pytest/assertion/util.py
index c2a5ddee0..41e66448d 100644
--- a/_pytest/assertion/util.py
+++ b/_pytest/assertion/util.py
@@ -111,11 +111,17 @@ def assertrepr_compare(config, op, left, right):
 
     summary = u('%s %s %s') % (ecu(left_repr), op, ecu(right_repr))
 
-    issequence = lambda x: (isinstance(x, (list, tuple, Sequence)) and
-                            not isinstance(x, basestring))
-    istext = lambda x: isinstance(x, basestring)
-    isdict = lambda x: isinstance(x, dict)
-    isset = lambda x: isinstance(x, (set, frozenset))
+    def issequence(x):
+        return (isinstance(x, (list, tuple, Sequence)) and not isinstance(x, basestring))
+
+    def istext(x):
+        return isinstance(x, basestring)
+
+    def isdict(x):
+        return isinstance(x, dict)
+
+    def isset(x):
+        return isinstance(x, (set, frozenset))
 
     def isiterable(obj):
         try: