17 окт. 2012 г. · The list method index will return -1 if the item is not present, and will return the index of the item in the list if it is present.

31 мая 2020 г. · I want to check if a list contains an item/value that is also present in another list. For example, here is what I am trying to do.

18 мар. 2018 г. · Suppose I have L = [{'G'}, {'D'}, {'B','C'}] . I want to check if 'C' is in L. I tried doing {'C'} in L , but it returns False

6 мар. 2021 г. · How to check whether a Python list contains ANY string as an element · if str in my_list: # return message · if "" in my_list: # return message

16 сент. 2022 г. · How to return a list which contains certain element from lists of lists ; use for item in lst: instead of for n in range(len(lst)): and lst[n]. – ...

24 мар. 2016 г. · Use the builtin all() function. if bag and all(elem == "drink" for elem in bag): print("Only 'drink' is in the bag").

3 июн. 2019 г. · Use isinstance(x, list) to see if x is an instance of list. If you want to ensure that all elements in your list (let's call it my_list) are lists, use all().

22 мая 2017 г. · To test if every item matches a certain condition, try the builtin function all() along with a generator expression.

13 февр. 2017 г. · If you also want to find subclasses of lists then you should use isinstance : def any_list_in(obj): return any(isinstance(item, list) for ...

29 апр. 2021 г. · I have two list (or string): one is big, and the other one is small. I want to check whether the bigger one (A) contains the small one (B) or not.