- Added doctests to pprint and combine filters.

def pprint(value):

    '''

    Returns a pretty string representation of the data structure given.

    Examples:

    >>> pprint(1)

    '1'

    >>> pprint([{'first_name': 'John', 'last_name': 'Doe'}, {'first_name': 'Jane', 'last_name': 'Doe'}])  # noqa: E501

    "[{'first_name': 'John', 'last_name': 'Doe'},\\n {'first_name': 'Jane', 'last_name': 'Doe'}]"

    '''

    from pprint import pformat

    return pformat(value)

def combine(default, override):

    '''

    Returns a combined dictionary of the 2 dictionaries given (with the 2nd

    overriding the 1st).

    Examples:

    >>> combined = combine({'a': 1, 'b': 2}, {'b': 3, 'c': 4})

    >>> 'a' in combined

    True

    >>> 'c' in combined

    True

    >>> combined['b'] == 3

    True

    '''

    combined = default.copy()

    combined.update(override)

    return combined