1 files changed, 22 insertions, 21 deletions
diff --git a/docs/examples/tutorial/cdef_classes/wave_function.pyx b/docs/examples/tutorial/cdef_classes/wave_function.pyx
index aa35d954e..34b144667 100644
--- a/docs/examples/tutorial/cdef_classes/wave_function.pyx
+++ b/docs/examples/tutorial/cdef_classes/wave_function.pyx
@@ -1,21 +1,22 @@
-from sin_of_square cimport Function
-
-cdef class WaveFunction(Function):
-
-    # Not available in Python-space:
-    cdef double offset
-
-    # Available in Python-space:
-    cdef public double freq
-
-    # Available in Python-space, but only for reading:
-    cdef readonly double scale
-
-    # Available in Python-space:
-    @property
-    def period(self):
-        return 1.0 / self.freq
-
-    @period.setter
-    def period(self, value):
-        self.freq = 1.0 / value
+from sin_of_square cimport Function
+
+
+cdef class WaveFunction(Function):
+
+    # Not available in Python-space:
+    cdef double offset
+
+    # Available in Python-space:
+    cdef public double freq
+
+    # Available in Python-space, but only for reading:
+    cdef readonly double scale
+
+    # Available in Python-space:
+    @property
+    def period(self):
+        return 1.0 / self.freq
+
+    @period.setter
+    def period(self, value):
+        self.freq = 1.0 / value