Checks if the given key exists in a dictionary.
in operator to check if d contains key.def key_in_dict(d, key): return (key in d) d = {'one': 1, 'three': 3, 'five': 5, 'two': 2, 'four': 4} key_in_dict(d, 'three') # True
Sorts the given dictionary by key.
Finds the first key in the provided dictionary that has the given value.
Retrieves the value of the nested key indicated by the given selector list from a dictionary or list.
Finds all keys in the provided dictionary that have the given value.