Given the movie ratings and users$$ movie watching histories as follows:

'Dune$2\text{'}$: $8\mathrm{.}7,$ 'Challengers': $7\mathrm{.}8,$ 'Civil War': $7\mathrm{.}6,$ 'Tarot': $5\mathrm{.}0,$ 'American Fiction': $7\mathrm{.}5$

Alice: 'Dune$2\text{'},$ 'Civil War', 'American Fiction', 'Tarot'

Cathy: 'Dune$2\text{'},$ 'Civil War', 'Challengers', 'Tarot'

Write a program to do the following:

$1.$ Create a dictionary for movie ratings

$2.$ A new user Brad is thinking about watching either Civil War or American Fiction. Help

him to choose one with higher rating.

Requirement: use dictionary entry accessing and if$-$else statement

$3.$ Create two sets for the users$$ movie watching histories

$4.$ Calculate the movie taste similarity between Alice and Cathy. Similarity is calculated as

the ratio of #CommonMovies to #TotalMovies watched by the two.

E$.$g$.$ similarity$(\{$a$,$ b$\},\{$b$,$ c$\})=1/3$

$5.$ Check whether the similarity between Alice and Cathy is above $0\mathrm{.}4.$ If yes, recommend

movies to Cathy. The recommended movies should be

$-$ in Alice$$s watching history

$-$ has not watched by Cathy