add parens for the sake of clarity

twmr · twmr · commit 75b465c67365 · 2014-08-28T09:47:29.000+02:00
diff --git a/examples/api/collections_demo.py b/examples/api/collections_demo.py
@@ -27,7 +27,7 @@
 
 # Make some spirals
 r = np.array(range(nverts))
-theta = np.array(range(nverts))*2*np.pi/(nverts - 1)
+theta = np.array(range(nverts))*(2*np.pi)/(nverts - 1)
 xx = r * np.sin(theta)
 yy = r * np.cos(theta)
 spiral = list(zip(xx, yy))
