```python In [11]: %prun -l 4 apply_integrate_f(df['a'].to_numpy(), ....: df['b'].to_numpy(), ....: df['N'].to_numpy()) ....: File "<ipython-input-11-613f5c6ec02d>", line 2 df['b'].to_numpy(), ^ IndentationError: unexpected indent ``` #### Problem description Code example in documentation for [enhancing performance](http://pandas-docs.github.io/pandas-docs-travis/user_guide/enhancingperf.html#using-ndarray) is erroneous. Shows intendation error instead of %prun timing. #### Expected Output Expected to see %prun timing.