13     robots_txt = ''  variable in BaseRobotTest
47     robots_txt = """\  variable in UserAgentWildcardTest
58     robots_txt = """\  variable in CrawlDelayAndCustomAgentTest
75     robots_txt = """\  variable in SitemapTest
92     robots_txt = """\  variable in RejectAllRobotsTest
130     robots_txt = ''  variable in EmptyFileTest
135     robots_txt = """\  variable in CrawlDelayAndRequestRateTest
157     robots_txt = """\  variable in InvalidRequestRateTest
174     robots_txt = """\  variable in InvalidCrawlDelayTest
186     robots_txt = """\  variable in AnotherInvalidRequestRateTest
201     robots_txt = """\  variable in UserAgentOrderingTest
219     robots_txt = """\  variable in GoogleURLOrderingTest
231     robots_txt = """\  variable in DisallowQueryStringTest
241     robots_txt = """\  variable in UseFirstUserAgentWildcardTest
254     robots_txt = """\  variable in EmptyQueryStringTest
264     robots_txt = """\  variable in DefaultEntryTest
277     robots_txt = """\  variable in StringFormattingTest
353     robots_txt = '{}elsewhere/robots.txt'.format(base_url)  variable in NetworkTestCase