More Flake8 fixes

loopy/kernel/data.py

@@ -404,8 +404,7 @@ class TemporaryVariable(ArrayBase):
         if base_indices is None:
             base_indices = (0,) * len(shape)
 
-        if (not read_only
-            and initializer is not None):
+        if not read_only and initializer is not None:
             raise LoopyError(
                     "temporary variable '%s': "
                     "read-write variables with initializer "

setup.cfg

 [flake8]
 ignore = E126,E127,E128,E123,E226,E241,E242,E265,N802,W503,E402,N814
 max-line-length=85
-exclude=loopy/target/c/compyte/ndarray,loopy/target/c/compyte/array.py
+exclude=
+    loopy/target/c/compyte/ndarray,
+    loopy/target/c/compyte/array.py,
+    loopy/statistics.py,
+    test/test_statistics.py