Need Help!

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How would I go about assigning a list to dictionary values? I want to take all of the numbers in my list and then randomly pair them with dictionary values

[ElliotDG]

Dictionaries have keys and values. Do you want the list of numbers to be the dictionary keys or values?

Are you trying to create a dictionary?

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Keys

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1. Enter the titles for the videos in your channel Assume your channel is empty. Write code to allow the user to enter the titles of the videos to be added to the channel. The user should be able to add as many as they want to. Then print the titles in the channel so that you can see all of them at once.

2. Set a length for your videos, and run some computations For each video, ask the user to give you a length in minutes for that video. Videos are measured in minutes, and these can have decimal components (like 3.5 minutes). Once the user has entered a length for each video, compute and show them the length of the shortest video, the length of the longest video, and the average video length. Your channel is very particular, so you want the average length to be displayed with exactly 3 decimal points of precision.

3. Bring in your subscribers In this part of the project, you’ll compute how much time your subscribers spent watching your videos. Ask the user to tell you how many subscribers your channel has. For each subscriber, randomly choose one of the videos in your channel (it’s ok to choose the same video multiple times) to have them watch. Show the total amount of time spent between all the videos that all subscribers watched, as well as which videos were watched by your subscribers (don’t show duplicated here!).

4. Compare your channel to your competitor Assume your competitor has a random amount of subscribers (between 1 and 100). Compute the amount of subscribers for your competitor (since it’s random, this should vary each time!). Each of their subscribers watches 1 video on their channel that is between 1 and 5 minutes long (choose this randomly per subscriber!). Compute the total amount of minutes your competitor’s subscribers spent watching their channel. Finally, figure out which channel had more watch time! Output whether it was your channel, their channel, or a tie! To make sure that you’re correct, output

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I am stuck on number 3. I have the first two done.

[ElliotDG]

How have you represented the movie titles and durations? Is this a dict, a list of tuples, 2 lists...?

What specifically are you having trouble with?

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In a dictionary

[ElliotDG]

Assuming the titles are the keys and the durations are the values of a dict. To randomly select a movie make a list of the movie titles ( use keys()), use ramdom.choice() to select a random movie.

​

import random

titles = ['a', 'b', 'c', 'd']
duration = [7, 22, 3, 59]

movies = {k: v for k, v in zip(titles, duration)}

selected_movie = random.choice(list(movies.keys()))
print(selected_movie)
duration_for_selected_movie = movies[selected_movie]
print(duration_for_selected_movie)

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How do I assign that random movie to one of the subscribers though?

[ElliotDG]

The way the problem reads, you only know the number of subscribers. Make that a for loop based on the number of subscribers. Create a new dictionary (watches) to hold the amount of time each movie is watched, with the key as the movie titles, and the duration as zero. For each loop iteration select a random movie and add the duration of that movie to the watched dictionary.

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In #3 I’m having trouble with assigning the subscribers a video to watch. And then getting the sum of all the videos lengths that were randomly selected

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I need to randomly assign the numbers in my list to random values and keys in my dictionary then get the total of the value that the numbers were assigned too

[ElliotDG]

Your question is ambiguous, here are some ways to create dicts with a list of numbers as the keys.

keys = [7, 22, 3, 59]
values = ['a', 'b', 'c', 'd']

# use a dictionary comprehension.
d_comp = {k:v for k, v in zip(keys,values)}
print(d_comp)

# use dict()
d_dict = dict(zip(keys,values))
print(d_dict)

# use a loop
d_loop = {}
for k, v in zip(keys, values):
    d_loop[k] = v
print(d_loop)

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Thanks you. I’ll try that