1 files changed, 17 insertions, 14 deletions
diff --git a/docs/examples/tutorial/cdef_classes/integrate.pyx b/docs/examples/tutorial/cdef_classes/integrate.pyx
index a3bbcbfec..ad4c8540b 100644
--- a/docs/examples/tutorial/cdef_classes/integrate.pyx
+++ b/docs/examples/tutorial/cdef_classes/integrate.pyx
@@ -1,14 +1,17 @@
-from sin_of_square cimport Function, SinOfSquareFunction
-
-def integrate(Function f, double a, double b, int N):
-    cdef int i
-    cdef double s, dx
-    if f is None:
-        raise ValueError("f cannot be None")
-    s = 0
-    dx = (b - a) / N
-    for i in range(N):
-        s += f.evaluate(a + i * dx)
-    return s * dx
-
-print(integrate(SinOfSquareFunction(), 0, 1, 10000))
+from sin_of_square cimport Function, SinOfSquareFunction
+
+def integrate(Function f, double a, double b, int N):
+    cdef int i
+    cdef double s, dx
+    if f is None:
+        raise ValueError("f cannot be None")
+
+    s = 0
+    dx = (b - a) / N
+
+    for i in range(N):
+        s += f.evaluate(a + i * dx)
+
+    return s * dx
+
+print(integrate(SinOfSquareFunction(), 0, 1, 10000))