Fix buggy code in doc, pytables test

Author: batterseapower

doc/source/user_guide/advanced.rst

@@ -783,10 +783,10 @@ values **not** in the categories, similarly to how you can reindex **any** panda
 
 .. ipython:: python
 
-   df2.reindex(['a', 'e'])
-   df2.reindex(['a', 'e']).index
-   df2.reindex(pd.Categorical(['a', 'e'], categories=list('abcde')))
-   df2.reindex(pd.Categorical(['a', 'e'], categories=list('abcde'))).index
+   df2.iloc[[0]].reindex(['a', 'e'])
+   df2.iloc[[0]].reindex(['a', 'e']).index
+   df2.iloc[[0]].reindex(pd.Categorical(['a', 'e'], categories=list('abcde')))
+   df2.iloc[[0]].reindex(pd.Categorical(['a', 'e'], categories=list('abcde'))).index
 
 .. warning::
 

pandas/util/testing.py

@@ -1736,7 +1736,7 @@ def makeUnicodeIndex(k=10, name=None):
 def makeCategoricalIndex(k=10, n=3, name=None, **kwargs):
     """ make a length k index or n categories """
     x = rands_array(nchars=4, size=n)
-    return CategoricalIndex(np.random.choice(x, k), name=name, **kwargs)
+    return CategoricalIndex(Categorical.from_codes(np.arange(k) % n, categories=x), name=name, **kwargs)
 
 
 def makeIntervalIndex(k=10, name=None, **kwargs):