Function check_exc_info

Lib/wsgiref/validate.py:427–430

(exc_info)

        assert_(0, "No Content-Type header found in headers (%s)" % headers)

def check_exc_info(exc_info):
    assert_(exc_info is None or type(exc_info) is tuple,
        "exc_info (%r) is not a tuple: %r" % (exc_info, type(exc_info)))
    # More exc_info checks?

def check_iterator(iterator):
    # Technically a bytestring is legal, which is why it's a really bad