Function check_iterator

Lib/wsgiref/validate.py:432–438

(iterator)

    # More exc_info checks?

def check_iterator(iterator):
    # Technically a bytestring is legal, which is why it's a really bad
    # idea, because it may cause the response to be returned
    # character-by-character
    assert_(not isinstance(iterator, (str, bytes)),
        "You should not return a string as your application iterator, "
        "instead return a single-item list containing a bytestring.")