pylons depends on WebOb 1.1.1+ at this point, so this should be ok

pylons/controllers/util.py

@@ -174,7 +174,7 @@ def index(self):
        response.headers.pop('Content-Type', None)
        response.headers.pop('Cache-Control', None)
        response.headers.pop('Pragma', None)
        raise status_map[304]().exception
        raise status_map[304]()
    else:
        log.debug("ETag didn't match, returning response object")

@@ -207,7 +207,7 @@ def abort(status_code=None, detail="", headers=None, comment=None):
                                  comment=comment)
    log.debug("Aborting request, status: %s, detail: %r, headers: %r, "
              "comment: %r", status_code, detail, headers, comment)
    raise exc.exception
    raise exc


def redirect(url, code=302):
@@ -221,4 +221,4 @@ def redirect(url, code=302):
    """
    log.debug("Generating %s redirect" % code)
    exc = status_map[code]
    raise exc(location=url).exception
    raise exc(location=url)

tests/test_units/test_controller.py

@@ -36,11 +36,11 @@ def strme(self):
    def use_redirect(self):
        pylons.response.set_cookie('message', 'Hello World')
        exc = status_map[301]
        raise exc('/elsewhere').exception
        raise exc('/elsewhere')
    
    def use_customnotfound(self):
        exc = status_map[404]
        raise exc('Custom not found').exception
        raise exc('Custom not found')
    
    def header_check(self):
        pylons.response.headers['Content-Type'] = 'text/plain'