Python: List Comprehension with a Nested Loop

Question

I have a situation where I am using list comprehension to scan one list and return items that match a certain criteria.

[item for item in some_list_of_objects if 'thisstring' in item.id]

I want to expand this and have a list of things that can be in the item, the list being of unknown length. Something like this:

string_list = ['somestring', 'another_string', 'etc']

[item for item in some_list_of_objects if one of string_list in item.id]

What is a pythonic way to accomplish this? I know I could easily rewrite it to use the standard loop structure, but I would like to keep the list comprehension if I can do so without producing very ugly code.

Thanks in advance.

Answer 1

Use any:

string_list = ['somestring', 'another_string', 'etc']

[item for item in some_list if any(s in item.id for s in string_list)]

any will lazily evaluate breaking on the first match or checking all if we don't get a match.

Answer 2

You can use the builtin any function for that [item for item in some_list if any(s in item for s in string)]