human
I am working on the file "PY_Basics/TMWP_DictionaryBasics.ipynb".
The first task is:
<a id="misskey" name="misskey"></a>
keyDict object
Can you write Python code for it?

Give me a the Python code you requested?
assistant
#Here is the Python code you requested.

class KeyDict(dict):
    def __missing__(self, key):
        #self[key] = key  # uncomment if desired behavior is to add keys when they are not found (w/ key as value)
        #this version returns the key that was not found
        return key

kdTst = KeyDict(super_heroes)
print(kdTst['The Incredible Hulk'])
print(kdTst['Ant Man'])   # value not found so it returns itself as per __missing__ over-ride

help(SortedDict)