Python: sub list of items depending on a certain value of the items, e.g. boolean

I have a list of similar objects, some of them have a certain value set, here more specifically a boolean flag:

myList = [WhatEver(..., T开发者_运维问答rue, ...), WhatEver(..., True, ...), WhatEver(..., False, ...), WhatEver(..., True, ...), WhatEver(..., False, ...), ...]

Is there a painless way in Python to get a sub list of items whose value is set to a specific value, here either True or False?

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Yes, there is. List comprehensions are a very good fit for this:

[item for item in myList if item.flag]
[item for item in myList if not item.flag]

where flag is the name of WhatEver's field that you want to check.

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Use filter:

filtered_list = filter(lambda item: item.flag, myList)