def __init__(self, client):
        self.client = client
Fail if value not in self.body.
dataset/ETHPy150Open CartoDB/cartodb-python/cartodb/imports.py/ImportManager.__init__--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/cherrypy/cherrypy/test/webtest.py/WebCase.assertInBody