def from_pairs_to_array_values ( pairs ) : result = { } for pair in pairs : result [ pair [ 0 ] ] = concat ( prop_or ( [ ] , pair [ 0 ] , result ) , [ pair [ 1 ] ] ) return result
how to combine value with a pair keys in array python
Like from pairs but combines duplicate key values into arrays : param pairs : : return :
def from_pairs_to_array_values(pairs):
    """
        Like from pairs but combines duplicate key values into arrays
    :param pairs:
    :return:
    """
    result = {}
    for pair in pairs:
        result[pair[0]] = concat(prop_or([], pair[0], result), [pair[1]])
    return result