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Python

Oliver White
Oliver White
6,193 Points
Posted by Oliver White
Oliver White
6,193 Points

Can I put a question unrelated to a treehouse course ?

I am working through the python OOP course -- I have tried to use elements of what I have learnt in the card mathing game and use it ( in a clumsy way) to practice and make a number generating class of my own -- i get stuck with the structure of classes methods and self." items" . I can get this to run on a single lump of code but I am still not getting whats wrong and the error message just says invalid syntax

Steven Parker
Steven Parker
243,861 Points
Steven Parker
Steven Parker
243,861 Points

If you are not already using a Treehouse Workspace, it would help if you transfer your project to one, and then you can include a link to a workspace "snapshot" with your question to make it easy for folks to replicate and analyze your issue. If you're not already familiar with that process, here's a video about sharing a snapshot of your workspace.

5 Answers

Steven Parker
Steven Parker
243,861 Points
Steven Parker
Steven Parker
243,861 Points

This is a very unconventional use of the __new__() method. Since it is a constructor it would normally return the new object instance, perhaps like this:

    return super().__new__(self)  # return the newly constructed object

But it's not returning a new object here. So the assignment of "forthewin" makes it a tuple and not a EuroWin object.

The code of __new__ seems to be initializing instead of constructing, so you may want to define it as __init__ instead, for which you would use a simple return with no arguments.

Either way, "forthewin" will then be a EuroWin object, and the print will work as expected.

Oliver White
Oliver White
6,193 Points
Oliver White
Oliver White
6,193 Points 
import random
class EuroWin:
  lucky_numbers = []
  picked_numbers = []
  lucky_stars = []
  picked_lucky_stars = [] 
  num_of_balls = 50
  num_of_stars = 12


  def __new__(self):
    self.lucky_numbers = list(range(1,self.num_of_balls+1))
    self.picked_numbers.append(random.sample(self.lucky_numbers, k=5))
    self.lucky_stars = list(range(1,self.num_of_stars+1))
    self.picked_lucky_stars.append( random.sample(self.lucky_stars, k=2) )

    return(self.picked_numbers,self.picked_lucky_stars)


  def __str__(self):
    return f"Your lucky numbers are {self.picked_numbers} and your lucky stars are {self.picked_lucky_stars}"



if __name__ == '__main__':
  forthewin = EuroWin()
  #print(forthewin.num_of_balls)
  #print(forthewin.picked_lucky_stars)
  #EuroWin()
  print(forthewin)
Oliver White
Oliver White
6,193 Points
Oliver White
Oliver White
6,193 Points

Hell

I was just trying to put all my OOP learnings into place and make a small little fun task to pick some eruomillions numbesr I have done the terrible thing of getting stuck and hacking it to pieces and re-writting it in many ways -- I moved lthe iter to new as I learnt that I should not return things from an iter

I also started with loads of class attributes but have put them in the iter now -- I think I need to relearn decotrators or nested methods --

Anyway -- the big issue I have is I was trying to use the_str_ via print and I can get part or it to work but not all of it --

It brings the numbers but not the text -- other versons have brought the text and not the number --

Have a look -- I put it into visual Studio Code as it is better for debugging and following

The python is above

Oliver White
Oliver White
6,193 Points
Oliver White
Oliver White
6,193 Points

Thanks so much -- I will have a look at it

I am two thirds of the way through the intermediate OOP course and I was just trying to try out the different things I had learnt --

I had used the iter but was advised that should not be for a method that returned something -- I think I thought that setting the values was returning -- I have it in an extra tab on one of me Treehouse workspaces but the error messages are easier and more detailed in the VScode tab so I coppied it out -- I think my breaking down the requirements and choosing the correct OOP feature to use was the biggest issue -- SMILEY EMOJI -- will dig in and see if I can get it to work -- I cant promise it will generate the correct numbers but I will remember you !

Steven Parker
Steven Parker
243,861 Points
Steven Parker
Steven Parker
243,861 Points

The workspace advantage it that the snapshot makes it easier on the helper to immediately replicate the issue, particularly if they do not have VSCode installed.

Oliver White
Oliver White
6,193 Points
Oliver White
Oliver White
6,193 Points

Thanks Steven -- Sorry -- I am doing the Beginning Data Science track and we just did the section on using Anaconda and all the other tools from there -- thats why I have been using VSCode --I just decided to do the OOP at intermediate to cement the learning I had done through the Begining to Data Science track