def is_multivalued(value):
<EOL>if isinstance(value, (string_types, binary_type)):<EOL><INDENT>return False<EOL><DEDENT>return isinstance(value, Iterable)<EOL>
Determine whether the given value should be treated as a sequence
of multiple values when used as a request parameter.

In general anything that is iterable is multivalued.  For example,
`list` and `tuple` instances are multivalued.  Generators are
multivalued, as are the iterable objects returned by `zip`,
`itertools.chain`, etc.  However, a simple `int` is single-valued.
`str` and `bytes` are special cases: although these are iterable,
we treat each as a single value rather than as a sequence of
isolated characters or bytes.