1.is来判断
groupName = params['groupName'] ##groupName的值是'url' reqBody['dim'] = groupName print("reqBody_dim-SummaryListHandler", reqBody['dim']) ## ('reqBody_dim-SummaryListHandler', u'url') print("reqBody_dim_url-SummaryListHandler", ('url' is reqBody['dim'])) ## ('reqBody_dim_url-SummaryListHandler', False) if groupName is 'url': 打印如下,看到通过is判断是false ('reqBody_dim-SummaryListHandler', u'url') ('reqBody_dim_url-SummaryListHandler', False)
2.id 和in
看到用in可以判断两个字符串相等
print("groupName:",groupName) reqBody['dim'] = groupName print("reqBody_dim-SummaryListHandler", reqBody['dim']) print("reqBody_dim_url_is-SummaryListHandler", ('url' is groupName)) print("reqBody_dim_url_id-SummaryListHandler", (id('url')==id(groupName))) print("reqBody_dim_url_in-SummaryListHandler", ('url' in groupName)) ('groupName:', u'url') ('reqBody_dim-SummaryListHandler', u'url') ('reqBody_dim_url_is-SummaryListHandler', False) ('reqBody_dim_url_id-SummaryListHandler', False) ('reqBody_dim_url_in-SummaryLis