step 32 diff correction

tdpetrou · Mar 24, 2019 · fdd9fb8 · fdd9fb8
1 parent 30ad97d
commit fdd9fb8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pandas_cub_final/__init__.py b/pandas_cub_final/__init__.py
@@ -689,9 +689,9 @@ def diff(self, n=1):
         A DataFrame
         """
         def func(values):
+            values = values.astype('float')
             values_shifted = np.roll(values, n)
             values = values - values_shifted
-            values = values.astype('float')
             if n >= 0:
                 values[:n] = np.NAN
             else: