🔒 While and For Loops HW Help | Python | Page 1

unkempt rover Apr 11, 2024, 2:10 AM

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So for a homework assignment I have to write code to essentially print out this using for loops based on inputs from a while loop, and I'm not quite sure how to go about it. My current idea is to use a list of some kind but I'm not sure how to actually increase the values in the list based on the different weight categories. Any help with that would be much appreciated, thank you!

zinc cypressBOT Apr 11, 2024, 2:10 AM

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unkempt rover So for a homework assignment I have to write code to essentially print out this ...

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@unkempt rover

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orchid bone Apr 11, 2024, 2:12 AM

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unkempt rover So for a homework assignment I have to write code to essentially print out this ...

What would the inputs look like? Just someone entering the size of eggs until they say stop?

unkempt rover Apr 11, 2024, 2:12 AM

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orchid bone What would the inputs look like? Just someone entering the size of eggs until th...

Yeah entering the weights of the eggs in ounces until they enter the sentinel value to stop the loop

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This is currently what my code is:

# Setting initial variables

total_eggs = 0
total_weight = 0
weight_max = ''
weight_min = ''
weight_cat_count = [0, 0, 0, 0, 0]

# Taking input float of egg weight

egg_weight = float(input('Enter the egg weight (0 to quit): '))

# While loop to get input of egg weights

while egg_weight != 0:
    total_eggs += 1
    total_weight += egg_weight

    if egg_weight > weight_max:
        weight_max = egg_weight
    if egg_weight < weight_min:
        weight_min = egg_weight

    # Restarting the loop via input
    egg_weight = float(input('Enter the egg weight (0 to quit): '))

# Printing total eggs that increment with each iteration of the loop

print(f'Number of eggs: {total_eggs:,.2f}')

# Calculating and printing average egg weight

avg_weight = total_weight / total_eggs
print(f'Average egg weight: {avg_weight:.2f}')

# Printing maximum egg weight

print(f'Heaviest egg weight: {weight_max:,.2f}')

# Printing minimum egg weight

print(f'Lightest egg weight: {weight_min:,.2f}')

for egg_weight in range(1, total_eggs +1):
    if egg_weight > 2.5:

orchid bone Apr 11, 2024, 2:13 AM

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!code

zinc cypressBOT Apr 11, 2024, 2:13 AM

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unkempt rover Apr 11, 2024, 2:13 AM

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Oh shoot I forgot comments do that here husk

orchid bone Apr 11, 2024, 2:13 AM

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can you wrap that in a codeblock?

unkempt rover Apr 11, 2024, 2:13 AM

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Sure I can do that

twilit canyon Apr 11, 2024, 2:14 AM

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Use a dict. Looking at the images a dict will do. Take input for each key and update the respective value.

orchid bone Apr 11, 2024, 2:14 AM

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So what I would focus on next is coding the loop you need that asks the user for input until they enter a stop value

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Once you have the input from the user, it'll be a bit easier to figure out how to sort

unkempt rover Apr 11, 2024, 2:15 AM

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Well it was more like the assignment is asking to not even engage the while loop if the sentinel value is immediately entered

unkempt rover Apr 11, 2024, 2:16 AM

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orchid bone So what I would focus on next is coding the loop you need that asks the user for...

Is that not just this?

while egg_weight != 0:
    total_eggs += 1
    total_weight += egg_weight

    if egg_weight > weight_max:
        weight_max = egg_weight
    if egg_weight < weight_min:
        weight_min = egg_weight

    # Restarting the loop via input
    egg_weight = float(input('Enter the egg weight (0 to quit): '))

orchid bone Apr 11, 2024, 2:17 AM

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Well, you do have the secondary while loop asking for input, but you're not quite capturing the input for later.

So I guess the question is, how do you know what size an egg is based on the weight? Do you have that breakdown?

unkempt rover Apr 11, 2024, 2:17 AM

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Yeah I have that

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But not in code anywhere

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orchid bone Apr 11, 2024, 2:18 AM

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Okay cool, so you can use that to count which egg sizes are being input. That's what the egg_cat_count variable is for, right?

unkempt rover Apr 11, 2024, 2:18 AM

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The assignment wants them in ounces

unkempt rover Apr 11, 2024, 2:18 AM

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orchid bone Okay cool, so you can use that to count which egg sizes are being input. That's ...

Yeah

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I don't know if my teacher wants us to use objects or not

orchid bone Apr 11, 2024, 2:19 AM

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So, once you get the egg weight, add in some code to figure out what size it is. Then once you know the size, increment the correct count in the egg_cat_count list (it's also worth looking at using a dict there, if you know how to use dicts)

orchid bone Apr 11, 2024, 2:19 AM

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unkempt rover I don't know if my teacher wants us to use objects or not

like a custom class or do you mean something else by object?

twilit canyon Apr 11, 2024, 2:21 AM

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Can you explain what the program does?

unkempt rover Apr 11, 2024, 2:22 AM

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orchid bone like a custom class or do you mean something else by object?

I'm not 100% sure honestly, I'm still confused as to what objects like are in the code itself

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My dad, who has background in coding, was just talking to me about them and like from my understanding basically the object itself gets defined with metadata?

orchid bone Apr 11, 2024, 2:23 AM

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unkempt rover I'm not 100% sure honestly, I'm still confused as to what objects like are in th...

Do the instructions mention "objects" at all?

unkempt rover Apr 11, 2024, 2:23 AM

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But then you assign data to the corresponding metadata for the object and it creates like a new object each time

orchid bone Apr 11, 2024, 2:23 AM

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"object(s)" can mean a variety of things in python depending on the context

unkempt rover Apr 11, 2024, 2:24 AM

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orchid bone Do the instructions mention "objects" at all?

Not that I saw?

orchid bone Apr 11, 2024, 2:25 AM

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unkempt rover Not that I saw?

So I wouldn't worry about it too much then, unless you have some specific instructions from your teacher that are outside the instructions

unkempt rover Apr 11, 2024, 2:26 AM

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I don't, no

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Other than her just reiterating to not use breaks

orchid bone Apr 11, 2024, 2:27 AM

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So I'd focus on adding in some code that can categorize each egg the user enters into the correct category. Then you can work on adjusting the correct category total from there

unkempt rover Apr 11, 2024, 2:28 AM

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So is that something I do through the list I have now or is there another way I should be doing that?

orchid bone Apr 11, 2024, 2:29 AM

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Do you know how to use dicts yet?

unkempt rover Apr 11, 2024, 2:29 AM

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No clue

orchid bone Apr 11, 2024, 2:30 AM

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So just use the list you have for the time being to get something working

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Once you have something working I can show you how using a dict might be an improvement

unkempt rover Apr 11, 2024, 2:33 AM

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We've pretty much only covered input/output, if statements, and loops so far

twilit canyon Apr 11, 2024, 2:34 AM

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Don't make the program to complicated. Use a dictionary update the dictionary as necessary. Sort the dictionary if needed. Take the input in while loop with a breaking condition. Print out the updated dict with a function call or just write print statement in your code.

unkempt rover Apr 11, 2024, 2:34 AM

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I don't know what that entails

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Or what that is

orchid bone Apr 11, 2024, 2:35 AM

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unkempt rover I don't know what that entails

a dictionary isn't required here, you can use the list for the time being

unkempt rover Apr 11, 2024, 2:38 AM

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orchid bone a dictionary isn't required here, you can use the list for the time being

Okay, so how do I like increase the individual values for the list?

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I'm not even really sure how the list works honestly

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I haven't seen anything in the textbook for it so far

orchid bone Apr 11, 2024, 2:39 AM

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!e

my_list = [0, 3, 10]
print(my_list[0])
my_list[1] += 1
print(my_list)

zinc cypressBOT Apr 11, 2024, 2:39 AM

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@orchid bone :white_check_mark: Your 3.12 eval job has completed with return code 0.

001 | 0
002 | [0, 4, 10]

orchid bone Apr 11, 2024, 2:40 AM

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So a list is a dynamic way to hold a variable amount of things. You can see there that I can change individual values inside a list if I want.

Python generally uses 0-based indexing, so the first item in the list has an index of 0. The second item has an index of 1, so on and so forth.

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So, based on the egg size, you can increment the number for the item in the list that represents that egg category

unkempt rover Apr 11, 2024, 2:42 AM

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orchid bone !e ```py my_list = [0, 3, 10] print(my_list[0]) my_list[1] += 1 print(my_list) `...

Oh so does that just do it to the 2nd value?

unkempt rover Apr 11, 2024, 2:43 AM

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unkempt rover

So if I have 0 is Jumbo, 1 is Extra Large, 2 is Large, 3 is Medium, and 4 is Small I just replace the 1 in my_list[1] with whatever position I want to increase?

orchid bone Apr 11, 2024, 2:44 AM

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!e

things_to_sort = ["apple", "banana", "cherry", "apricot"]

alphabet_fruit_count = [0, 0, 0]
for item in things_to_sort:
    if item.startswith("a"):
        alphabet_fruit_count[0] += 1
    elif item.startswith("b"):
        alphabet_fruit_count[1] += 1
    elif item.startswith("c"):
        alphabet_fruit_count[2] += 1

print(alphabet_fruit_count)

zinc cypressBOT Apr 11, 2024, 2:44 AM

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@orchid bone :white_check_mark: Your 3.12 eval job has completed with return code 0.

[2, 1, 1]

unkempt rover Apr 11, 2024, 2:44 AM

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Okay

orchid bone Apr 11, 2024, 2:44 AM

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hopefully the example makes it clear

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||for those watching, I purposely didn't index item||

unkempt rover Apr 11, 2024, 2:45 AM

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I need to get that to look like this in the output somehow though

Jumbo: **
XL: *
Large: ***
Medium: ****
Small: ***

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Something like that

orchid bone Apr 11, 2024, 2:45 AM

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Yeah, once you're able to get the category counts correct, then you can work on printing that display

unkempt rover Apr 11, 2024, 2:46 AM

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So do I have to compare it to the list somehow?

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To get that display?

orchid bone Apr 11, 2024, 2:47 AM

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Start with just figuring out how to print this:

Jumbo: 2
XL: 1
Large: 3
Medium: 4
Small: 3

just do the counts first. You already know which egg size has which counts so one or more print statements should do the trick

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One fun thing with Python that may be helpful here is what happens when you multiply a string

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!e

my_str = "!"
print(my_str*4)

zinc cypressBOT Apr 11, 2024, 2:48 AM

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@orchid bone :white_check_mark: Your 3.12 eval job has completed with return code 0.

!!!!

unkempt rover Apr 11, 2024, 2:51 AM

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Is it possible to read the list and print it that way?

orchid bone Apr 11, 2024, 2:52 AM

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in what way do you mean? (this is part where using a dict might be more helpful, but if you haven't learned them yet then using a list will require just a tad bit more code)

unkempt rover Apr 11, 2024, 2:53 AM

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Like you directly call the list and print it

twilit canyon Apr 11, 2024, 2:53 AM

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Use two list to list one to know the position of the value list and one for storing the value.

keypoint = ['jumbo']
values = [0]

values[keypoint.index('jumbo')] = new valeu

unkempt rover Apr 11, 2024, 2:54 AM

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~~I don't think lists were even in the textbook honestly it was just something I found with searching around~~

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At least in anything I read in the textbook so far that I can remember

orchid bone Apr 11, 2024, 2:57 AM

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I need to drop for the evening, but try just using basic print statements for the time being and then you can see how to optimize it using the method that Your name is suggesting or a dict

unkempt rover Apr 11, 2024, 3:01 AM

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Alright

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Thanks for the help so far

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If I just have something that runs I guess that'll be the first milestone for me 😅

unkempt rover Apr 11, 2024, 3:25 AM

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This is going so great /sar

Enter the egg weight (0 to quit): 2.6
Enter the egg weight (0 to quit): 2.4
Traceback (most recent call last):
 line 27, in <module>
    elif egg_weight < weight_min:
TypeError: '<' not supported between instances of 'float' and 'NoneType'

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# Setting initial variables

total_eggs = 0
total_weight = 0
weight_max = 0
weight_min = None

# Setting lists for the size categories and their frequencies

# weight_cat = [Jumbo, Extra_Large, Large, Medium, Small]
weight_cat_count = [0, 0, 0, 0, 0]

# Taking input float of egg weight

egg_weight = float(input('Enter the egg weight (0 to quit): '))

# While loop to get input of egg weights

while egg_weight != 0:
    total_eggs += 1
    total_weight += egg_weight

    if egg_weight > weight_max:
        weight_max = egg_weight
    elif egg_weight is None:
        weight_min = egg_weight
    elif egg_weight < weight_min:
        weight_min = egg_weight

    # Restarting the loop via input
    egg_weight = float(input('Enter the egg weight (0 to quit): '))

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It's 11:30 I should probably just call it good for the night

zinc cypressBOT Apr 11, 2024, 4:27 AM

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#🔒 While and For Loops HW Help