python – How to search through dictionaries?

If you want to know if key is a key in people, you can simply use the expression key in people, as in:

if key in people:

And to test if it is not a key in people:

if key not in people:

Simple enough

if entry in people:
    print (Name:  + entry)
    print (Age:  + str(people[entry]) + n)

You can reference the values directly. For example:

>>> people = {
... Austun: 25,
... Martin: 30}
>>> people[Austun]

Or you can use people.get(<Some Person>, <value if not found>).