Collections in Python

 1. Create a random list of 9 elements. Perform the following actions with it:

• add -1 to the end of the list
• add the list elements [-2, -8, -5, -7] to the end of the list
• add 9 as the third element
• count the number of three random numbers (from the list) in the list
• determine the index of the element -5 in the list
• check if -2, -10 are in the list
• sort the list 
• reverse the sorted list

 2. Create two sets (with 3-5 elements each). One - with a list of items you would gather in case of a zombie apocalypse. 
The second - a list of items you would take to the sea.

Example (but feel free to add something of your own):

zombies_are_comming = {'water', 'first aid kit', 'radio', 'flashlight', 'snacks'}

pina_colada_is_waiting = {'swimsuit', 'sunglasses', 'flipflops', 'water', 'snacks'}

Obtain and output the following sets:

• Everything necessary for survival in a zombie apocalypse on the southern coast of Spain (one set + another)
• Items that will help you survive in the apocalypse but will not be useful in the Maldives (if we believe the created sets) (what is in one list and does not appear in the other)
• A list of items needed for both events at the same time - after all, we need to understand what will be in the highest demand next summer (intersection of the sets)
• We did not keep track of the demand, items necessary for both events at the same time have already been taken 😔 Output what remains (symmetric difference)

 3. Create an empty dictionary. Insert the following 3 elements into it:

"Inception": {"director": "Christopher Nolan", "year": 2010, "genre": "Sci-Fi"}

"Titanic": {"director": "James Cameron", "year": 1997, "genre": "Romance/Drama"}

"The Matrix": {"director": "Lana Wachowski", "year": 1999, "genre": "Sci-Fi"}

• Output information about Inception. Anticipate the possibility that this element is not in the dictionary (if not, an appropriate message should be displayed)
• Output all movie titles.
• Remove Titanic from the dictionary.

 4. You have a list of friends (3-5 people). You sit down to play Battleship (only 2 players per game). Output all possible pairs of combatants. (For three friends, the list will be 1 and 2, 1 and 3, 2 and 3)

 5. A marker is simultaneously one of three colors (red, blue, green) and one of three types (professional, children's, office). Output all possible markers.


6. You have a list of friends (3-5 people). You sit down to play Uno (playing in a circle). Output all pairs of who plays with whom (consecutive overlapping pairs taken from the input iterable). 

Example:

Players: A, B, C, D

Combinations: AB, BC, CD, DA

Hint: the keyword here is "consecutive pairs"

🟣 7. Create a Counter object from a list of 100 random numbers.

• Output the 2 objects that occur most frequently and how many times they occur
• Remove from the Counter the information about the most frequently occurring element
• Create another list of 10 numbers and update the Counter object with this new list.

🟣 8. Create a deque list from the list [10]

Sequentially generate 10 digits (range from 0 to 20) and add to the list at the beginning (if the number is less than 10)  and at the end (if greater than or equal to 10)

Example: 

For the sequence 1, 15, 9, 22, 10, 8, 22 the resulting list should look like 8, 9, 1, 10, 15, 22, 10, 22.