def sort_mixed_list(iterable):
    """
    Sort a list of strings and other objects:
    put the strings first and the others last

    Parameters
    ----------
    iterable : list

    Returns
    -------
    list
    """
    strings = []
    others = []
    for elem in iterable:
        if isinstance(elem, str):
            strings.append(elem)
        else:
            others.append(elem)
    res = strings + others
    return res
