Activity $1$:

For a given dictionary, named inventory,

try to do the followings:

$$ Add a key to inventory called 'pocket'.

$$ Set the value of 'pocket' to be a list consisting of the strings: 'shell', 'berry',

and 'mint'.

$$ Remove$(\text{'}$paper$\text{'})$ from the list of items stored under the 'pack' key.

$$ Add $50$ to the number stored under the 'purchase' key.