#使用成员运算符my_list = [1, 2, 3, 4, 5]#判定元素是否存在element_to_check = 3ifelement_to_checkinmy_list:print(f"{element_to_check} 存在于列表中。")else:print(f"{element_to_check} 不存在于列表中。")#或者使用 not in 判定不存在element_to_check = 6ifelement_to_checknotinmy_li...
if element_to_check in my_list: print(f"{element_to_check} 存在于列表中。") else: print(f"{element_to_check} 不存在于列表中。") # 或者使用 not in 判定不存在 element_to_check = 6 if element_to_check not in my_list: print(f"{element_to_check} 不存在于列表中。") else: print...
isublistlstisublistlstalt[C is a list]loop[for each element in A]check_list_contains_sublist(A, B)check_list_contains_sublist(C, B)continue checking sublistreturn True if sublist foundreturn False 上面的序列图展示了函数check_list_contains_sublist的执行流程,可以帮助我们更直观地理解这个方法的工作...
1 python checking presence of a list element 0 Checking if a value is already in a list 4 Python 3 How to check if a value is already in a list in a list 1 Check if list contains another list in python 2 Check if object is already in list (Python) 1 How to...
0 If string contains an list item 0 Check if string is contained in list element 3 Check a string if it contains a string that's inside a list python 8 Check if a string contains the list elements 2 Python: how to check if a string contains an element from a list...
pc_driver,10).until(EC.presence_of_element_located((By.XPATH,"//ListItem[contains(., '1000')...
The resulting list remains empty if the web element is absent in the DOM. In the following example, we’ll test a selection action from a dropdown. Example: Select action from drop-down. Action: First, we will check if an element exists in the dropdown before taking the action. We ...
Learn how to check if a Python list contains a specific element with easy examples. Master list manipulation and element searching efficiently.
if sys.version_info >= (3,): def __imul__(self: _S, n: int) -> _S: ... def __contains__(self, o: object) -> bool: ... def __reversed__(self) -> Iterator[_T]: ... def __gt__(self, x: List[_T]) -> bool: ... ...
False>>>isinstance(a,(int,str,list)) True#是元组中的一个是返回True issubclass():用于判断是否是子类 iter():用于生成迭代器 len():返回对象(字符、列表、元组等)长度或项目个数 list():将元组转换为列表 locals():以字典类型返回当前位置的全部局部变量 ...