Hammerheart

I'm going through the Programming With a Purpose course on Coursera, and trying to come up with my own implementation of some of the example programs before looking at the example. I just finished the example of a gambling situation. I was hoping to get some more eyes on my code and be told whether my version is going to behave differently from the example. Due to the nature of simulations, I can't just compare the output of the two, since it will vary.

This is the explanation of what the code is meant to represent:

Gambler (PROGRAM 1.3.8) is a simulation that can help answer these ques tions. It does a sequence of trials, using Math.random() to simulate the sequence of bets, continuing until the gambler is broke or the goal is reached, and keeping track of the number of wins and the number of bets.

Mine:

public class Gambler
{
    public static void main(String[] args)
    {
        int stake = Integer.parseInt(args[0]);
        int initialStake = stake;
        int goal = Integer.parseInt(args[1]);
        int desiredGain = goal - stake;
        int trials = Integer.parseInt(args[2]);
        int games = 0;
        int wins = 0;
        int bets = 0;

        while (games < trials)
        {
            bets++;
            if (Math.random() >= 0.5)
            {
                stake++;
                desiredGain = goal - stake;
                if (desiredGain <= 0)
                {
                    wins++;
                    games++;
                    stake = initialStake;
                }
            }
            else
            {
                stake--;
                if (stake < 1)
                {
                    games++;
                    stake = initialStake;
                }
            }
        }
        int averageBets = bets / trials;
        int percentWins = (100*wins / trials);
        System.out.println("Theoretical chance of winning: " + 100*initialStake/goal);
        System.out.println("Expected Bets: " + initialStake*(goal - initialStake));
        System.out.println(percentWins + "% wins");
        System.out.println("Average # bets: " + averageBets);
    }
}

Example:

public class Gambler2
{
    public static void main(String[] args)
    {
        int stake = Integer.parseInt(args[0]);
        int goal = Integer.parseInt(args[1]);
        int T = Integer.parseInt(args[2]);
        int bets = 0;
        int wins = 0;

        for (int t=0; t<T; t++)
        {
            int cash = stake;
            while (cash > 0 && cash < goal)
            {
                bets++;
                if (Math.random() < 0.5) cash++;
                else                     cash--;
            }
            if (cash == goal) wins++;
        }
    int averageBets = bets / T;
    int percentWins = (100*wins / T);
    System.out.println("Theoretical chance of winning: " + 100*stake/goal);
    System.out.println("Expected Bets: " + stake*(goal - stake));
    System.out.println(percentWins + "% wins");
    System.out.println("Average # bets: " + averageBets);
    }
}

The example is obviously much cleaner, but here is why I think mine should work the same:

1. Each time the player's current stake exceeds the goal or reaches 0, the number of games played is incremented. When games == trials, the loop ends.
2. When a game ends, stake is reset to its initial value for the next trial
3. Bets is incremented each time the loop runs
4. If the current stake meets or exceeds the goal, wins is incremented

I set up my conditions for interpreting the output of Math.random() opposite of the example. If that even makes a difference at all, it seems like it would take a lot more than 1000 trials before it became apparent.

I just want to make sure I'm not missing something.

I've been struggling with getting a wezterm window running cmus on a specific workspace upon start up for a while now. I can't use assign because the only eligible criteria differentiating it from a generic wezterm window is the pid, and my attempts to get the pid from get_tree and use that have been unsuccessful. I thought I had figured it out, when I put these lines in a another file:

#! /bin/bash
sway workspace 10 && sway 'exec wezterm -e cmus'

then in my config file I have this: exec ./start_cmus.sh

But it doesn't work. If I run start_cmus from the shell, the expected behavior ensues (a wezterm window running cmus is opened on workspace 10).

Any tips?

I am working on a rudimentary Breakout clone, and I was doing the wall collision. I have a function that I initially treated as a Boolean, but I changed it to return a different value depending on which wall the ball hit. I used the walrus operator to capture this value while still treating the function like a bool. I probably could have just defined a variable as the function's return value, then used it in an if statement. But it felt good to use this new thing I'd only heard about, and didn't really understand what it did. I was honestly kind of surprised when it actually worked like I was expecting it to! Pretty cool.

All I want to do is put a still image over a MP3 so I can upload a song to Youtube. (Sidenote: It feels really good to find a song I want to show someone that isn't already on Youtube. It used to be a somewhat regular thing i'd do, I have about a dozen Youtube videos that are just songs I uploaded because I wanted to show them to someone, but I guess Youtube got more stuff and my taste got more pedestrian, so I haven't felt the need to do it until now. Feels good!)

I used VEED, a web editor, and it produced a >300mb file. That seems a bit excessive. For the curious, this is the song: https://youtu.be/iLz7VXhCrnk

I started working through the 100 Days of Code course of Udemy last February, and I'm in the home stretch. I'm on the final lessons, which are really just prompts for projects. No hand holding, just a brief description of the goal. I recently finished a tkinter GUI program, the goal of which was to enable adding text watermarks.

I took a few liberties--mainly, I made it possible to layer a png on top of the background. It was a really fun project and quickly grew more complicated than I expected it to. I got some hands on experience with the Single Responsibility Principle, as I started off doing everything in my Layout class.

Eventually, I moved all the stuff that actually involved manipulating the Image objects to an ImageManager class. I feel like I could have gotten even more granular. That's one thing I would love to get some feedback on. How would a more experienced programmer have architected this program?

Anyway, I guess this preamble is long enough. I'm going to leave a link to the repository here. I would have so much appreciation for anyone who took the time to look at the code, or even clone the repo and see if my instructions for getting it to run on your machine work.

Watermark GUI Repo

cross-posted from: https://programming.dev/post/14680192

I have a VPS, but no root access so I can't use apt, or even read a lot of the system files. I would like to get jellyfin (or any media server, really) running on it. Jellyfin has a portable installation option, so I followed the instructions in the docs to install it from the .tar.gz.

But it says I have to install ffmpeg-jellyfin, and I can't find a portable installation of that. My VPS already has ffmpeg installed on it. Will jellyfin work if I just point it to that instead? Or, how can I go about installing ffmpeg-jellyfin without root access?

I have a VPS, but no root access so I can't use apt, or even read a lot of the system files. I would like to get jellyfin (or any media server, really) running on it. Jellyfin has a portable installation option, so I followed the instructions in the docs to install it from the .tar.gz.

But it says I have to install ffmpeg-jellyfin, and I can't find a portable installation of that. My VPS already has ffmpeg installed on it. Will jellyfin work if I just point it to that instead? Or, how can I go about installing ffmpeg-jellyfin without root access?

I have been using sway (basically i3 for Wayland) instead of a traditional desktop environment because it really makes a difference in my laptops performance.

But apparently sway ignores .desktop files which was how i was autostarting things on KDE.

Is the best way to handle this by going through the sway config? If not, how would you do it.

Bonus points if you can tell me how to get the autostart programs to also open in specific workspaces.

I'm working on a little gui app that will eventually (hopefully) add a watermark to a photo. But right now I'm focused on just messing around with tkinter and trying to get some basic functionality down.

I've managed to display an image. Now I want to change the image to whatever is in the Entry widget (ideally, the user would put an absolute path to an image and nothing else). When I click the button, it makes the image disappear. I made it also create a plain text label to see if that would show up. It did.

Okay, time to break out the big guns. Add a breakpoint. py -m pdb main.py. it works. wtf?

def change_image():
    new_image = Image.open(image_path.get()).resize((480, 270))
    new_tk_image = ImageTk.PhotoImage(new_image)
    test_image_label.configure(image=new_tk_image)
    breakpoint()

with the breakpoint, the button that calls change_image works as expected. But without the breakpoint, it just makes the original image disappear. Please help me understand what is happening!

edit: all the code

import io
import tkinter as tk
from pathlib import Path
from tkinter import ttk

from PIL import ImageTk
from PIL import Image

from LocalImage import Localimage
from Layout import Layout

class State:
    def __init__(self) -> None:
        self.chosen_image_path = ""

    def update_image_path(self):
        self.chosen_image_path = image_path.get()



def change_image():
    new_image = Image.open(image_path.get()).resize((480, 270))
    new_tk_image = ImageTk.PhotoImage(new_image)
    test_image_label.configure(image=new_tk_image)
    breakpoint()

TEST_PHOTO_PATH = "/home/me/bg/space.png"
PIL_TEST_PHOTO_PATH = "/home/me/bg/cyberpunkcity.jpg"
pil_test_img = Image.open(PIL_TEST_PHOTO_PATH).resize((480,270))
# why does the resize method call behave differently when i inline it
# instead of doing pil_test_img.resize() on a separate line?


root = tk.Tk()

root.title("Watermark Me")
mainframe = ttk.Frame(root, padding="3 3 12 12")
mainframe.grid(column=0, row=0, sticky="NWES")

layout = Layout(mainframe)

image_path = tk.StringVar()
tk_image = ImageTk.PhotoImage(pil_test_img)
test_image_label = ttk.Label(image=tk_image)

entry_label = ttk.Label(mainframe, text="Choose an image to watermark:")
image_path_entry = ttk.Entry(mainframe, textvariable=image_path)
select_button = ttk.Button(mainframe, text="Select",
                           command=change_image)
hide_button = ttk.Button(mainframe, text="Hide", command= lambda x=test_image_label:
                  layout.hide_image(x))
test_text_label = ttk.Label(mainframe, text="here i am")
empty_label = ttk.Label(mainframe, text="")

for child in mainframe.winfo_children():
    child.grid_configure(padx=5, pady=5)

entry_label.grid(column=0, row=0)
image_path_entry.grid(column=1, row=0)
hide_button.grid(column=0, row=3)
select_button.grid(column=0, row=4)
test_image_label.grid(column=0, row=5)
empty_label.grid(column=0, row=6)


image_path_entry.insert(0,TEST_PHOTO_PATH)
image_path_entry.focus()
breakpoint()



root.mainloop()

Sometimes my CMUS will randomly stop playing a track or it won't play the next track until I manually go in and hit c (for resume) or otherwise initiate playback. I would like to be able to see what happened before these instances so i could either fix my config or, if its a problem beyond the scope of my local environment, get info to write up a proper bug report with. Where can I find such logs? Would they be in the systemd journal or somewhere in /var ?

So I just had an issue where my shebang lines weren't parsing properly for a python script I was attempting to execute. A quick google revealed that it was probably because I wrote the scripts on windows and now I was trying to run them on Linux (so happy i finally made the switch btw. using the computer is fun again!). So i took the advice I found and tried to run :%s/^M/ (using C-v, C-m to insert the escape character), and it failed to find any matches. I tried the same command in vanilla vi and it worked.

Is there some setting I don't have configured properly? I would prefer to be able to do this sort of thing within neovim.

If anyone could help me out with this, I'd greatly appreciate it. Basically, I can't ctrl + v to paste anything I pipe into the clipboard selection in xclip, and i can't xclip -o anything I copied with ctrl-c or ctrl-shift-c.

Maybe I want to paste a path into a neovim file. echo $(pwd) | xclip -i -sel c Now the path is in my clipboard, right? It sure shows up if i xclip -o -sel c!

But when I go into neovim and paste from the unnamedplus register, instead it pastes the last thing I copied in my browser.

if I want to copy the output of something from my terminal and google it, ctrl+v in the browser completely ignores my xclip selection.

i am forced to use the mouse and ctrl+shift+c in order to paste it into a search engine, like a caveman.

I hope I've done a decent enough job explaining the problem. It was most apparent earlier, as I was making a cronjob and I had to be explicit about file paths because i couldn't assume the working directory would be the directory of the script I was calling. I really wish I could have just echo $(pwd) | xclip -sel c; open neovim; hit p; see the path appear in my file.

I have a little clipboard icon in my system tray with my copy history, except none of the things I put in the clipboard selection with xclip -sel c or xsel -b appear there. I think that program is klipper, but I'm not sure.

I know there's a number of work arounds but still this kind of frustrates me. I think it has something to do with wayland and xclipboard not talking to each other. I am running wayland, KDE Plasma 5.27.5, and Debian 12.

Is there a simple configuration setting I can tweak, or do I need to find something to replace klipper or xclip? I have tried toggling the keep selection and clipboard the same and always save text selection in history settings in the plasma clipboard, no change. I tried two terminal emulators to no avail.

I will happily provide any more information if it would be helpful.