Python : ... time-travel debugging project.

... ime-travel debugging, a technique that allows developers to "rewind" their code execution and inspect past states.

This is an old GitHub project from four years old.

• Execution Recording – The debugger logs each step of execution, including variable states and function calls.
• State Snapshots – It captures snapshots of memory at different points in execution.
• Reverse Execution – Developers can step backward through the code to analyze previous states.
• IDE Integration – Some tools integrate with VSCode and PyCharm for seamless debugging

This project is dependent on the following technologies:

• Node.js / Express
• Python 3
• SQLite
• better-sqlite3
• Nearley.js / Moo.js
• TypeScript
• HTML5 Canvas
• Webpack
• gcc / automake

Unfortunately, the Time Traveling Debugger project has only been tested on OSX and Linux, and Windows support is not officially available

Python 3.13.0 : bad management of python versions - need to fix into environment ...

I don't like how python management comes now, because some data god to \AppData\ and custom folder ... this will block some EXE because is not into environment ...

Will be more easy if the python team will make a management of all python on operating system area ... one reason is virtual environement , but this one python version of running ...

Can be better ? The management of python versions can be improved with simple user interface selection to manage all python versions and python modules, maybe a separate command shell more good thar python command on command shell, maybe a simple artificial intelligence just for user intercations and management of working ...

See this example , when I need to change to a lower version of python just to test some old python modules ...

Installing collected packages: tqdm, tifffile, scipy, rpds-py, platformdirs, opencv-python-headless, networkx, llvmlite, lazy-loader, imageio, attrs, scikit-image, referencing, pooch, numba, pymatting, jsonschema-specifications, jsonschema, rembg
   ----------------------------------------  0/19 [tqdm]  WARNING: The script tqdm.exe is installed in 'C:\Users\nicol\AppData\Roaming\Python\Python313\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
   -- -------------------------------------  1/19 [tifffile]  WARNING: The scripts lsm2bin.exe, tiff2fsspec.exe, tiffcomment.exe and tifffile.exe are installed in 'C:\Users\nicol\AppData\Roaming\Python\Python313\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
  WARNING: The scripts imageio_download_bin.exe and imageio_remove_bin.exe are installed in 'C:\Users\nicol\AppData\Roaming\Python\Python313\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location. ----------
   ----------------------------------- ---- 17/19 [jsonschema]  WARNING: The script jsonschema.exe is installed in 'C:\Users\nicol\AppData\Roaming\Python\Python313\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
   ----------------------------------- ---- 17/19 [jsonschema]  WARNING: The script rembg.exe is installed in 'C:\Users\nicol\AppData\Roaming\Python\Python313\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed attrs-25.3.0 imageio-2.37.0 jsonschema-4.23.0 jsonschema-specifications-2025.4.1 lazy-loader-0.4 llvmlite-0.44.0 networkx-3.4.2 numba-0.61.2 opencv-python-headless-4.11.0.86 platformdirs-4.3.8 pooch-1.8.2 pymatting-1.1.14 referencing-0.36.2 rembg-2.0.66 rpds-py-0.25.0 scikit-image-0.25.2 scipy-1.15.3 tifffile-2025.5.10 tqdm-4.67.1

D:\PythonProjects\PyQt6\catafest_images_viewer>python main_001_removebk.py
Traceback (most recent call last):
  File "D:\PythonProjects\PyQt6\catafest_images_viewer\main_001_removebk.py", line 4, in 
    from image_viewer import ImageViewer
  File "D:\PythonProjects\PyQt6\catafest_images_viewer\image_viewer.py", line 7, in 
    from qt_setup import Image, ContextMenu, ProcessDialog, ProcessingManager, ImageProcessor
  File "D:\PythonProjects\PyQt6\catafest_images_viewer\qt_setup.py", line 5, in 
    from processing import ProcessDialog, ProcessingManager, ImageProcessor
  File "D:\PythonProjects\PyQt6\catafest_images_viewer\processing.py", line 7, in 
    from rembg import remove
  File "C:\Users\nicol\AppData\Roaming\Python\Python313\site-packages\rembg\__init__.py", line 5, in 
    from .bg import remove
  File "C:\Users\nicol\AppData\Roaming\Python\Python313\site-packages\rembg\bg.py", line 7, in 
    import onnxruntime as ort
ModuleNotFoundError: No module named 'onnxruntime'

Python Qt6 : simple animation with sprites.

Today I created with addon for Blender 3D and result is an image with sprites ...

I used that image with sprites and PyQt6 to animate my desktop screen, see the result:

This is the source code I used:

import sys
from PyQt6.QtWidgets import QApplication, QLabel, QWidget, QVBoxLayout, QMenu

# diff PyQt6 versus old PyQt
from PyQt6.QtGui import QAction

from PyQt6.QtGui import QPixmap, QIcon
from PyQt6.QtCore import QTimer, Qt

class AnimatedWindow(QWidget):
    def __init__(self):
        super().__init__()

        # set window
        self.setWindowFlags(Qt.WindowType.FramelessWindowHint | Qt.WindowType.WindowStaysOnTopHint)
        self.setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)

        # build layout 
        layout = QVBoxLayout()
        self.label = QLabel(self)
        layout.addWidget(self.label)
        self.setLayout(layout)

        # load sprite sheet from Camera_256px.png file name
        sprite_sheet = QPixmap("Camera_256px.png")  
        self.frame_width = sprite_sheet.width() // 11  # because I have 11 sprite on image
        self.sprites = [sprite_sheet.copy(i * self.frame_width, 0, self.frame_width, sprite_sheet.height()) for i in range(11)]
        self.current_frame = 0

        # 
        self.timer = QTimer()
        self.timer.timeout.connect(self.update_animation)
        self.timer.start(150)  # Schimbă frame-ul la fiecare 150 ms

        # 
        self.resize(self.frame_width, sprite_sheet.height())

        # left down on screen 
        screen = QApplication.primaryScreen().geometry()
        self.move(10, screen.height() - self.height() - 10)

    def update_animation(self):
        """Actualizează sprite-ul în QLabel"""
        self.label.setPixmap(self.sprites[self.current_frame])
        self.current_frame = (self.current_frame + 1) % len(self.sprites)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = AnimatedWindow()
    window.show()
    sys.exit(app.exec())

Python 3.11.11 : Colab simple image to video with stabilityai - part 052.

Today, a simple test with artificial intelligence and stabilityai/stable-video-diffusion-img2vid-xt.

The result is not very good, but I believe the source code can be improved ...

pipe = StableVideoDiffusionPipeline.from_pretrained(
    'stabilityai/stable-video-diffusion-img2vid-xt',
    torch_dtype=torch.float16,
    variant='fp16'
)

pipe.enable_model_cpu_offload()

You can find the source code on my colab GitHUb projects - catafest_069.

Python 3.13.3 : ... Nuitka package works with python 3.12 and MinGW.

Nuitka is licensed under the Apache License, Version 2.0; you may not use it except in compliance with the License.

Nuitka is the Python compiler. It is written in Python. It is a seamless replacement or extension to the Python interpreter and compiles every construct that Python 2 (2.6, 2.7) and Python 3 (3.4 - 3.13) have, when itself run with that Python version.

Nuitka translates the Python modules into a C level program that then uses libpython and static C files of its own to execute in the same way as CPython does.

I used the pip command:

python -m pip install -U nuitka
Collecting nuitka
  Downloading Nuitka-2.7.tar.gz (3.9 MB)
...
Successfully built nuitka
Installing collected packages: zstandard, ordered-set, nuitka
Successfully installed nuitka-2.7 ordered-set-4.1.0 zstandard-0.23.0

[notice] A new release of pip is available: 25.0.1 -> 25.1.1
[notice] To update, run: python.exe -m pip install --upgrade pip

This version of python : 3.13.0rc1 not work !!!

I need to upgrade my version to 3.13.3 version today after I open an issue on github repo!

python.exe -m pip install --upgrade pip
...
Successfully installed pip-25.1.1

python -m nuitka --version
2.7
Commercial: None
Python: 3.13.0rc1 (tags/v3.13.0rc1:e4a3e78, Jul 31 2024, 20:58:38) [MSC v.1940 64 bit (AMD64)]
Flavor: CPython Official
GIL: yes
Executable: C:\Python313\python.exe
OS: Windows
Arch: x86_64
WindowsRelease: 10
Nuitka-Scons:WARNING: Windows SDK must be installed in Visual Studio for it to be usable
Nuitka-Scons:WARNING: with Nuitka. Use the Visual Studio installer for adding it.
Version C compiler: ~\AppData\Local\Nuitka\Nuitka\Cache\downloads\gcc\x86_64\14.2.0posix-19.1.1-12.0.0-msvcrt-r2\mingw64\bin\gcc.exe (gcc 14.2.0).

After upgrade the nuitka show me these results:

python -m nuitka --version
2.7
Commercial: None
Python: 3.13.3 (tags/v3.13.3:6280bb5, Apr  8 2025, 14:47:33) [MSC v.1943 64 bit (AMD64)]
Flavor: CPython Official
GIL: yes
Executable: C:\Python313\python.exe
OS: Windows
Arch: x86_64
WindowsRelease: 10
Nuitka-Scons:WARNING: Windows SDK must be installed in Visual Studio for it to be usable
Nuitka-Scons:WARNING: with Nuitka. Use the Visual Studio installer for adding it.
Version C compiler: ~\AppData\Local\Nuitka\Nuitka\Cache\downloads\gcc\x86_64\14.2.0posix-19.1.1-12.0.0-msvcrt-r2\mingw64\bin\gcc.exe (gcc 14.2.0).

Same error, I uninstall the Python: 3.13.3 version and I install the python version 3.13.0 and use the pip again to install this python package.

python -m pip install -U nuitka
Collecting nuitka
...
Installing collected packages: zstandard, ordered-set, nuitka
Successfully installed nuitka-2.7 ordered-set-4.1.0 zstandard-0.23.0

[notice] A new release of pip is available: 24.2 -> 25.1.1
[notice] To update, run: python.exe -m pip install --upgrade pip
python.exe -m pip install --upgrade pip
Requirement already satisfied: pip in c:\python_3_13_0\lib\site-packages (24.2)
...
Successfully installed pip-25.1.1

Using this version tell me same error with Windows and Visual Studio, but the MinGW is install from the first version.

The solution from artificial intelligence is to use another python version.

I used these commands:

py -3.12 -m pip install -U nuitka
Collecting nuitka
  Using cached Nuitka-2.7.tar.gz (3.9 MB)
  Installing build dependencies ... done
  ...
  Installing collected packages: zstandard, ordered-set, nuitka
Successfully installed nuitka-2.7 ordered-set-4.1.0 zstandard-0.23.0

[notice] A new release of pip is available: 24.2 -> 25.1.1
[notice] To update, run: C:\Python312\python.exe -m pip install --upgrade pip
py -0
 -V:3.13 *        Python 3.13 (64-bit)
 -V:3.12          Python 3.12 (64-bit)
py -3.12 -m nuitka --mingw64 hello.py
Nuitka-Options: Used command line options:
Nuitka-Options:   --mingw64 hello.py
Nuitka-Options:WARNING: You did not specify to follow or include anything but main
Nuitka-Options:WARNING: program. Check options and make sure that is intended.
Nuitka: Starting Python compilation with:
Nuitka:   Version '2.7' on Python 3.12 (flavor 'CPython Official')
Nuitka:   commercial grade 'not installed'.
Nuitka: Completed Python level compilation and optimization.
Nuitka: Generating source code for C backend compiler.
Nuitka: Running data composer tool for optimal constant value handling.
Nuitka: Running C compilation via Scons.
Nuitka-Scons: Backend C compiler: gcc (gcc 14.2.0).
Nuitka-Scons: Backend C linking with 6 files (no progress information available for
Nuitka-Scons: this stage).
Nuitka-Scons: Compiled 6 C files using ccache.
Nuitka-Scons: Cached C files (using ccache) with result 'cache miss': 6
Nuitka: Keeping build directory 'hello.build'.
Nuitka: Successfully created 'D:\PythonProjects\hello.exe'.
Nuitka: Execute it by launching 'hello.cmd', the batch file needs to set environment.

The test is a simple python script from the official website:

def talk(message):
    return "Talk " + message

def main():
    print(talk("Hello World"))

if __name__ == "__main__":
    main()

... and this python version works well with MinGW, the artificial intelligence used to fix these errors was ChatGPT.

hello.exe
Talk Hello World

Python 3.13.0rc1 : using gTTS version 2.5.4 python package.

gTTS (Google Text-to-Speech), a Python library and CLI tool to interface with Google Translate text-to-speech API

... from the gtts.readthedocs.io - Documentation.

pip install gTTS
Collecting gTTS
  Downloading gTTS-2.5.4-py3-none-any.whl.metadata (4.1 kB)
...
Installing collected packages: gTTS
Successfully installed gTTS-2.5.4

simple python script with one example : create an audio file in romanian language.

from gtts import gTTS
tts = gTTS('Azi este 25 aprilie 2025', lang='ro', tld='ro')
tts.save('azi25.mp3')

Python 3.13.0rc1 : ... fal artificial intelligence and python test.

We have the most-popular models implemented and available as API endpoints for you to start crafting your own AI-powered app today. From the fal.ai website !

You need to set your A.P.I. key from this url.

system32>setx.exe FAL_KEY "e6fd708c-8065-4c73-ac2a-e3c73c6ff0fe:f70e0adb08362a3073993efa31b6acee"

SUCCESS: Specified value was saved.

Open a new terminal and with your editor create this simple example ...

import fal_client

response = fal_client.run("fal-ai/fast-sdxl", arguments={"prompt": "a cute cat, realistic, orange"})
print(response["images"][0]["url"])

Into the terminal run the python script and you will find the url of the image :

python test_fal_client_001.py
https://v3.fal.media/files/rabbit/kY2MZG6LLkzjyIT8J3oiI.jpe

This is the result output of the running source code as 1024px image, see the resize 112px I created:

News : Pydantic Releases Sandboxed Python Execution Server.

Pydantic officially announced its broader support for the MCP within the PydanticAI framework around March 20, and now the new tool leverages the Model Context Protocol (MCP), an open standard initiated by Anthropic.

The server achieves isolation by executing code using Pyodide, a Python runtime compiled to WebAssembly.

give AI agents the ability to perform Python-based tasks safely

You can find the Pydantic’s documentation for the tool, available at ai.pydantic.dev .

The Model Context Protocol itself try to solve difficulties in connecting AI models to the diverse external tools and data sources they often need.

Python Qt6 : Simple tool to convert HTML.

This is based on old tutorial from this post.

I add a class AgentPY class with all features for processing input and HtmlEditor class for .

Maybe I will use the agentpy module , but now works well without agents.

This is the source code:

from PyQt6.QtWidgets import QApplication, QMainWindow, QTextEdit, QMenu
from bs4 import BeautifulSoup

class AgentPy:
    """Clasă pentru procesarea și curățarea HTML-ului."""
    @staticmethod
    def clean_all_styles(html_content):
        soup = BeautifulSoup(html_content, 'html.parser')
        for tag in soup.find_all(True):
            if tag.name == "a":
                attrs_to_keep = {"href": tag.attrs.get("href")} if "href" in tag.attrs else {}
                tag.attrs = attrs_to_keep
            else:
                tag.attrs = {}
        return str(soup)

    @staticmethod
    def clean_empty_tags(html_content):
        soup = BeautifulSoup(html_content, 'html.parser')
        for tag in soup.find_all(True):
            if not tag.contents or all(str(content).strip() == "" for content in tag.contents):
                tag.decompose()
        return str(soup)

    @staticmethod
    def clean_duplicate_tags(html_content):
        soup = BeautifulSoup(html_content, 'html.parser')
        unique_tags = {}
        for tag in soup.find_all(True):
            tag_key = (tag.name, str(tag.attrs))
            if tag_key in unique_tags:
                tag.decompose()
            else:
                unique_tags[tag_key] = tag
        return str(soup)

    @staticmethod
    def convert_to_html(source_code):
        """Convertim caractere speciale din cod sursă în entități HTML."""
        # Creăm un dicționar pentru conversia caracterelor
        html_entities = {
            '<': '<',
            '>': '>',
            '&': '&',
            '"': '"',
            "'": ''',
            '[': '[',
            ']': ']',
        }
        # Înlocuim caracterele în codul sursă
        for char, entity in html_entities.items():
            source_code = source_code.replace(char, entity)
        return source_code

class HtmlEditor(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("catafest-cleaner-HTML")
        self.setGeometry(100, 100, 800, 600)

        # Editor de text
        self.editor = QTextEdit(self)
        self.setCentralWidget(self.editor)

        # Meniu contextual
        self.editor.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
        self.editor.customContextMenuRequested.connect(self.show_context_menu)

    def show_context_menu(self, position):
        menu = QMenu(self)
        clean_styles_action = menu.addAction("Clean basic HTML")
        clean_styles_action.triggered.connect(self.clean_all_styles)
        clean_empty_tags_action = menu.addAction("Clean Empty Tags")
        clean_empty_tags_action.triggered.connect(self.clean_empty_tags)
        clean_agentpy_action = menu.addAction("Clean AgentPy")
        clean_agentpy_action.triggered.connect(self.clean_duplicate_tags)
        convert_to_html_action = menu.addAction("Convert to HTML")  # Noua opțiune
        convert_to_html_action.triggered.connect(self.convert_to_html)
        menu.exec(self.editor.mapToGlobal(position))

    def clean_all_styles(self):
        html_content = self.editor.toPlainText()
        clean_html = AgentPy.clean_all_styles(html_content)
        self.editor.setPlainText(clean_html)

    def clean_empty_tags(self):
        html_content = self.editor.toPlainText()
        clean_html = AgentPy.clean_empty_tags(html_content)
        self.editor.setPlainText(clean_html)

    def clean_duplicate_tags(self):
        html_content = self.editor.toPlainText()
        clean_html = AgentPy.clean_duplicate_tags(html_content)
        self.editor.setPlainText(clean_html)

    def convert_to_html(self):
        source_code = self.editor.toPlainText()
        html_content = AgentPy.convert_to_html(source_code)
        self.editor.setPlainText(html_content)

if __name__ == "__main__":
    import sys
    from PyQt6.QtCore import Qt
    app = QApplication(sys.argv)
    window = HtmlEditor()
    window.show()
    sys.exit(app.exec())

Python 3.11.11 : Colab fixed catafest_0059 with NVIDIA models - part 051.

Fixed the colab notebook for test models from NVIDIA for waveglow and tacotron2.

Python Qt6 : Simple tool for clean HTML.

Today I make a simple tool to clean the HTML from style and more. I used artificial inteligence from copilot.

This is the result of this simple tool.

from PyQt6.QtWidgets import QApplication, QMainWindow, QTextEdit, QMenu
from bs4 import BeautifulSoup

class HtmlEditor(QMainWindow):
    def __init__(self):
        super().__init__()

        self.setWindowTitle("catafest-cleaner-HTML")  # Titlu actualizat
        self.setGeometry(100, 100, 800, 600)

        # Editor de text
        self.editor = QTextEdit(self)
        self.setCentralWidget(self.editor)

        # Meniu contextual
        self.editor.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
        self.editor.customContextMenuRequested.connect(self.show_context_menu)

    def show_context_menu(self, position):
        menu = QMenu(self)
        clean_styles_action = menu.addAction("Clean basic HTML")
        clean_styles_action.triggered.connect(self.clean_all_styles)
        clean_empty_tags_action = menu.addAction("Clean Empty Tags")
        clean_empty_tags_action.triggered.connect(self.clean_empty_tags)
        menu.exec(self.editor.mapToGlobal(position))

    def clean_all_styles(self):
        # Obține conținutul HTML din editor
        html_content = self.editor.toPlainText()

        # Utilizează BeautifulSoup pentru a procesa HTML-ul
        soup = BeautifulSoup(html_content, 'html.parser')

        # Elimină toate atributele, cu excepția celor din ancorele <a>
        for tag in soup.find_all(True):
            if tag.name == "a":  # Păstrează doar atributul 'href' pentru <a>
                attrs_to_keep = {"href": tag.attrs.get("href")} if "href" in tag.attrs else {}
                tag.attrs = attrs_to_keep
            else:
                tag.attrs = {}  # Elimină toate atributele pentru celelalte tag-uri

        # Actualizează conținutul editorului
        clean_html = str(soup)
        self.editor.setPlainText(clean_html)

    def clean_empty_tags(self):
        # Obține conținutul HTML din editor
        html_content = self.editor.toPlainText()

        # Utilizează BeautifulSoup pentru a procesa HTML-ul
        soup = BeautifulSoup(html_content, 'html.parser')

        # Elimină tag-urile goale
        for tag in soup.find_all(True):
            # Verifică tag-uri goale
            if not tag.contents or all(str(content).strip() == "" for content in tag.contents):  
                tag.decompose()  # Elimină tag-ul complet

        # Actualizează conținutul editorului
        clean_html = str(soup)
        self.editor.setPlainText(clean_html)

if __name__ == "__main__":
    import sys
    from PyQt6.QtCore import Qt
    app = QApplication(sys.argv)
    window = HtmlEditor()
    window.show()
    sys.exit(app.exec())

Python 3.13.0rc1 : pig for AI-powered automation.

Pig is an API for AI-powered automation of Windows desktop applications and workflows. It allows AI agents to remotely navigate user interfaces and interact with software on Windows computers, even for applications without public APIs. Organizations might use Pig to automate complex, repetitive tasks involving legacy enterprise software, overcome limitations of traditional robotic process automation tools, and reduce the need for manual data handling by human workers.

Follow the install from the official website.

pip install pig-python
Collecting pig-python
...
Successfully installed aiohttp-retry-2.9.1 click-8.1.8 iso8601-2.1.0 pig-python-0.1.2 simple-term-menu-1.6.6 tabulate-0.9.0

From the API Keys url get the key and run a server:

piglet join --secret the_API_key
Display dimensions: 1280x720
Local server running at http://localhost:3000
Connected to control server

The local machine can be found on this webpage.

I go to machine chat and I ask to create a source script in python for test the artificial intelligence.

It looks like you're encountering an error with the Pig API. The error message indicates that the API key hasn't been set properly. To resolve this issue, you need to set the PIG_SECRET_KEY environment variable or pass the API key directly to the Client constructor when initializing the Pig client. Would you like me to help you with setting up the environment variable or modifying your code to include the API key in the Client constructor? yes , I need a python script example

The remote artificial intelligence machine move the mouse and open notepad, add source code and save to my desktop.

I add my API key and I run it, see the result:

This source script is the result of artificial intelligence processing

"""
Example script showing how to properly initialize the Pig client with an API key
using both environment variable and direct constructor methods.
"""

import os
from pig import Client

# Example API key (replace with your actual API key in production)
API_KEY = "SK-..."

def initialize_with_env_variable():
    """
    Method 1: Initialize Pig client using environment variable
    This is the recommended approach for production environments
    """
    # Set the environment variable
    os.environ["PIG_SECRET_KEY"] = API_KEY
    
    # Initialize the client (it will automatically use the environment variable)
    client = Client()
    
    print("Client initialized using environment variable")
    return client

def initialize_with_direct_key():
    """
    Method 2: Initialize Pig client by passing the API key directly
    Useful for testing or when environment variables are not preferred
    """
    # Initialize the client by passing the API key directly to the constructor
    client = Client(api_key=API_KEY)
    
    print("Client initialized by passing API key directly")
    return client

if __name__ == "__main__":
    # Example 1: Using environment variable
    client1 = initialize_with_env_variable()
    
    # Example 2: Passing API key directly
    client2 = initialize_with_direct_key()
    
    # Both methods achieve the same result
    print("Both initialization methods are complete!")

News : Now Available: Replit Agent v2