Checking a key exists or not in a dictionary

Question

I have a dictionary like this

odict([(1, {'media_one': '000121'}), (2, {'media_two': '201984'}), (3, {'media_three': '301984'})])

I want to check if the key media_two or media_one or media_three is exists in this dictionary or not. If exists do something else do nothing. How can we check

Answer 1

>>> odict = OrderedDict([(1, {'media_one': '000121'}), (2, {'media_two': '201984'}), (3, {'media_three': '301984'})])
>>> any("media_one" in item for item in odict.values())
True

This checks that one of the keys is present. To check for all of the keys:

>>> all(any(key in item for item in odict.values()) 
...                     for key in ("media_one", "media_two", "media_three"))
True

Answer 2

(lambda d: ["media_one" in m for m in d.values()])(odict)

Output

[True, False, False]