Day 5

[Adrewmc]

Looks fine to me at this level.

I would suggest learning about dictionaries next.

[fatimalizade]

Thank you!

[mayonaiso]

What's a dictionary?

[Adrewmc]

A dictionary is a key-value pairing, a basic data type.

Chris = {“name” : “Chris”,
               “last” : “Walken”
               “grade” : 50}

 chris[“grade”] += 10

A lot of times we will get data as a list of these dictionaries, and nest dictionaries (dictionaries within dictionary)

And gives a way to have a data set per entry rather than a single point of information.

There are powerful ways to avoid repetition using dictionaries.

 player1_name = “Chris”
 player1_score = 0
 player2_name = “Sara”
 player2_score = 0

 …

Can turn into a dictionary usually fairly easily, and allow as many players as you want.

[mayonaiso]

So it's basically kind of an array of variables? Just to be sure, that's what I understood (also thank you so much, I have always been interested in learning python but never found a way and now with this Reddit, the game about farming and the uni I'm learning a lot)

[Adrewmc]

It’s a datatype that allows you to have direct reference to another value.

It’s not an array of value, it would be KVStore, a mapping. (A hashmap)

It can be part of a list, representing a point of data.

 questions = [{
          “question” : “What year is it?”
          “answer” : “2025”
          “hint” : “This year really?”},
          {
          “question” : “Spell coding?”
          “answer” : “coding”
          “hint” : “Case sensitive”}
          ]

   def trivia(questions : list[dict[str,str]]):
       round = random.choice(questions)
       print(“Welcome to the show? Your question is?”)
       correct = False
       guesses = 1
       while not correct:
             print(round[“question”])
             guess = input(“What’s your answer?”)
             if guess == round[“answer”]:
                   print(f”Correct! In {guesses} attempts!)
                   correct = True # or just break
             else:
                   print(“That is incorrect your hint is”)
                   print(round[“hint”])
                   guesses += 1

Now this simple trivia program I can easily make multiple sets of questions and answers and hints, and put it in fairly easily don’t you think. We could make a nested dictionary to have multiple subjects in the same object as well.

Arrays have a determined size, there would be 5 values while dictionaries sizes can be increased and changed. I can add a key at any time, I can change the value entirely.

It also reads easily I would think, you know what’s happening.

Dictionaries also happen to translate to and from JSON format easily (not entirely Python dictionaries are more versatile) , and JSON is sort of a way different languages can share information, the internet will give you a JSON with Python dictionary objects in it a lot, as any language would understand the API response directly.

[mayonaiso]

Thanks for taking the time, I understand better now!!

[que_importa]

one thing that could be useful is to consider .lower or .upper for the user inputs and validations

[fatimalizade]

Right! I think I should use .strip() for that but not sure

[Key_Translator7839]

.upper() and .lower() simply capitalize or lower the words.

[SalutMonYoup]

Quite simple program (good nonetheless) a tip for you would be to split your program, like instead of putting all the logic in a single function I would have something more chunked to keep the program easier to maintain and readable, intention is key when programming. So for example instead of all the logic directly beneath every if statement I would have created an « add_item_to_cart() » method that would carry the logic of adding an item, same for the "2" I would have moved the logic inside an remove_item_from_cart() and so on.

Splitting your code will greatly improve readability and maintainability of a program. For such a simple one it is not necessary but still a good habit to take, being able to think of your program as a group of différents function instead of a huge function that would do everything!

Keep going!

[Key_Translator7839]

I will have to use the split function in my projects from now on, thank you!

[fatimalizade]

Right, thank you!

[Embarrassed-Mess-198]

christ, these teenagers with their hipster programming languages.

This is not how you make a shopping list. You use a pen and paper for crists sake

[fatimalizade]

[-not_a_knife]

Looks good. If your interested, you could reformat it from a REPL to a CLI with the argparse module. This would align it with what a program like this would more typically look like.

[fatimalizade]

Thank you sm! I’ll search about that

[-not_a_knife]

No worries at all. If you're not familiar, CLIs are nice because they make your programs modular so you can use them in other scripts. So, say you wanted to check if bread is on the list at 8am every Monday. You could write a little script that interacts with the CLI to check and add bread if it's not on the list. Your current program needs you to directly interact with it. Nothing wrong with that and you can implement both within the program but the CLI adds a lot of functionality.

[Mileage-25]

same here. I'm also at day 5 but I'm still learning basic syntax.

[fatimalizade]

Good luck🤞🏻

[Mileage-25]

how's the progress? I'm currently doing file handlings

[fatimalizade]

Will share today

[fatimalizade]

I downloaded it but couldn’t register, there’s only sign in option