Fix a typo

b1a5c762 · xitong · 9612397a · b1a5c762
Commit b1a5c762 authored Aug 19, 2019 by xitong
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py_optimization.markdown ...utorials/py_core/py_optimization/py_optimization.markdown +1 -1

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--- a/doc/py_tutorials/py_core/py_optimization/py_optimization.markdown
+++ b/doc/py_tutorials/py_core/py_optimization/py_optimization.markdown
@@ -40,7 +40,7 @@ goal):
 img1 = cv.imread('messi5.jpg')

 e1 = cv.getTickCount()
-for i in xrange(5,49,2):
+for i in range(5,49,2):
    img1 = cv.medianBlur(img1,i)
 e2 = cv.getTickCount()
 t = (e2 - e1)/cv.getTickFrequency()