How to use the delocate.tools.get_archs function in delocate

``depended_lib`` is the filename of the library depended on,
        ``depending_lib`` is the library depending on ``depending_lib`` and
        ``missing_archs`` is a set of missing architecture strings giving
        architectures present in ``depending_lib`` and missing in
        ``depended_lib``.  An empty set means all architectures were present as
        required.
    """
    if isinstance(require_archs, string_types):
        require_archs = (['i386', 'x86_64'] if require_archs == 'intel'
                         else [require_archs])
    require_archs = frozenset(require_archs)
    bads = []
    for depended_lib, dep_dict in copied_libs.items():
        depended_archs = get_archs(depended_lib)
        for depending_lib, install_name in dep_dict.items():
            depending_archs = get_archs(depending_lib)
            all_required = depending_archs | require_archs
            all_missing = all_required.difference(depended_archs)
            if len(all_missing) == 0:
                continue
            required_missing = require_archs.difference(depended_archs)
            if len(required_missing):
                bads.append((depending_lib, required_missing))
            else:
                bads.append((depended_lib, depending_lib, all_missing))
            if stop_fast:
                return set(bads)
    return set(bads)

`require_archs` was missing from ``depending_lib``.  A length 3 tuple
        is of form ``(depended_lib, depending_lib, missing_archs)`` where
        ``depended_lib`` is the filename of the library depended on,
        ``depending_lib`` is the library depending on ``depending_lib`` and
        ``missing_archs`` is a set of missing architecture strings giving
        architectures present in ``depending_lib`` and missing in
        ``depended_lib``.  An empty set means all architectures were present as
        required.
    """
    if isinstance(require_archs, string_types):
        require_archs = (['i386', 'x86_64'] if require_archs == 'intel'
                         else [require_archs])
    require_archs = frozenset(require_archs)
    bads = []
    for depended_lib, dep_dict in copied_libs.items():
        depended_archs = get_archs(depended_lib)
        for depending_lib, install_name in dep_dict.items():
            depending_archs = get_archs(depending_lib)
            all_required = depending_archs | require_archs
            all_missing = all_required.difference(depended_archs)
            if len(all_missing) == 0:
                continue
            required_missing = require_archs.difference(depended_archs)
            if len(required_missing):
                bads.append((depending_lib, required_missing))
            else:
                bads.append((depended_lib, depending_lib, all_missing))
            if stop_fast:
                return set(bads)
    return set(bads)