通常使用find_element或find_elements方法来定位元素。 1、find_element使用给定的方法定位和查找一个元素 2、find_elements使用给定的方法定位和查找所有元素list 常用定位方式共八种: 1.当页面元素有id属性时,最好尽量用by_id来定位。 2.XPath很强悍,但定位性能不是很好,所以还是尽量少用。如果确实少数元素不好定...
print str.endswith('o')#是否已什么开始 print str.startswith('H')#处理tab键 str2='Hello\t999'print str2.expandtabs()#寻找子序列位置,没有找到返回-1,返回了是1print str.find('a')#寻找子序列的位置,没有找到就报错 print str.index('e')#字符串的格式化输出,也就是占位符 age=20name='wuya...
Finally, display the result by using the built-in function index() with a variable named Fruit_list. Example Open Compiler Fruit_list = ['Banana', 'Apple', 1000, 'Mango'] print("String present in the index:\n") # iterate through the list of elements for i in Fruit_list: # check ...
Python基础入门 1.Python 介绍 注:这里的Python一律指cpython Python 是一种解释型、面向对象、动态数据类型的高级程序设计语言。 Python是跨平台的。 Python 官网:https://www.python.org/ Python 安装:https://www.
2 index()方法:python 的index方法是在字符串里查找子串第一次出现的位置,类似字符串的find方法,不过比find方法不同的是,如果查找不到子串,会抛出异常,而不是返回-1info = 'abca'print(info.index('a',1)) #3print(info.index('33')) #ValueError: substring not found...
find(), rfine(), index(), rinex(), count() 查找统计 s="apple, peach, banana, peach, pear" 1. s.find('peach')# 返回第一次出现的位置 1. 7 1. Docstring: S.find(sub[, start[, end]]) -> int Return the lowest index in S where substring sub is found, ...
string="this is data structures book by packt publisher";suffix="publisher";prefix="this";print(string.endswith(suffix))#Check if string contains given suffix.print(string.startswith(prefix))#Check if string starts with given prefix.#Outputs>>True>>True ...
Python offers a straightforward approach that involves iterating over each item in the list and checking for a match to find if an element exists in the list using a loop. This method is particularly useful when you need to perform additional operations on matching elements or when working ...
In [4]: 1ina Out[4]: True In [5]: 4notina Out[5]: True 序列类型转换 In [6]: list('Hello') Out[6]: ['H', 'e', 'l', 'l', 'o'] In [7]: tuple('Hello') Out[7]: ('H', 'e', 'l', 'l', 'o') In [9]: ...
| at least one cased character in S, False otherwise. | | join(...) | S.join(iterable) -> str | Return a string which is the concatenation of the strings in the | iterable. The separator between elements is S. | | ljust(...) | S.ljust(width[, fillchar]) -> st...