Review datapythonista for file groupby.rst

Signed-off-by: Fabian Haase <[email protected]>

Author: FHaase

doc/source/groupby.rst

@@ -7,12 +7,8 @@
    import numpy as np
    import pandas as pd
 
-   import matplotlib  # noqa: F401
    import matplotlib.pyplot as plt
 
-   from collections import OrderedDict
-
-   # matplotlib.style.use('default')
    plt.close('all')
 
    np.random.seed(123456)
@@ -569,8 +565,7 @@ need to rename, then you can add in a chained operation for a ``Series`` like th
    (grouped['C'].agg([np.sum, np.mean, np.std])
                 .rename(columns={'sum': 'foo',
                                  'mean': 'bar',
-                                 'std': 'baz'})
-    )
+                                 'std': 'baz'}))
 
 For a grouped ``DataFrame``, you can rename in a similar manner:
 
@@ -579,8 +574,7 @@ For a grouped ``DataFrame``, you can rename in a similar manner:
    (grouped.agg([np.sum, np.mean, np.std])
            .rename(columns={'sum': 'foo',
                             'mean': 'bar',
-                            'std': 'baz'})
-    )
+                            'std': 'baz'}))
 
 
 Applying different functions to DataFrame columns
@@ -610,6 +604,8 @@ must be either implemented on GroupBy or available via :ref:`dispatching
 
 .. ipython:: python
 
+   from collections import OrderedDict
+
    grouped.agg({'D': 'std', 'C': 'mean'})
    grouped.agg(OrderedDict([('D', 'std'), ('C', 'mean')]))