def is_not_(a, b, msg=None):
    assert a is not b, msg or "%r is %r" % (a, b)
Format a Django HttpRequest for logging it.
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/testing/assertions.py/is_not_--crossover with--dataset/ETHPy150Open lsaffre/lino/lino/core/utils.py/format_request