1 files changed, 1 insertions, 1 deletions
diff --git a/invars.py b/invars.py
index 7937108..db9b674 100644
--- a/invars.py
+++ b/invars.py
@@ -14,6 +14,6 @@ def calc_dist_proper(coord, gXX):
     r_proper = np.empty_like(coord)
     sqgXX    = interp.interp1d(coord, np.sqrt(gXX))
     r_proper[0] = 0.0
-    for i in xrange(coord.shape[0] - 1):
+    for i in range(coord.shape[0] - 1):
         r_proper[i + 1] = r_proper[i] + integrate.quad(sqgXX, coord[i], coord[i + 1])[0]
     return r_proper