def head1(self, n=<NUM_LIT:5>):
return self.iloc[:n]<EOL>
Return the first elements of the Series.

This function is mainly useful to preview the values of the
Series without displaying the whole of it.

Parameters
----------
n : int
    Number of values to return.

Returns
-------
Series
    Subset of the original series with the n first values.

See Also
--------
tail : Return the last n elements of the Series.

Examples
--------
>>> s = pd.Series(['Ant', 'Bear', 'Cow', 'Dog', 'Falcon'])
>>> s.head()
0   Ant
1   Bear
2   Cow
3   Dog
4   Falcon
dtype: object

With the `n` parameter, we can change the number of returned rows:

>>> s.head(n=3)
0   Ant
1   Bear
2   Cow
dtype: object