为什么selenium这定位元素只有这两个，不是有八个吗
版本问题，以前是find_element_by_id 等8个。现在写法换成 find_elements(By.ID,'') 。
selenium3https://blog.csdn.net/ZangKang1/article/details/117922937?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522165814244216781647563149%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=165814244216781647563149&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_ecpm_v1~rank_v31_ecpm-5-117922937-null-null.185^v2^control&utm_term=selenium&spm=1018.2226.3001.4450
