Python Qt6 : build a mini tool for memory game with PyQt6 !

Today, I tested this python script with PyQt6 to create this matrix data for memory game by click on canvas.

I add few lines of source code and I create the memory game window to test that matrix:

News : Released v3.9.0 for NiceGUI.

The nicegui python package was released few days ago on the GitHub project, you can install with the pip tool:

python -m pip install nicegui
WARNING: Ignoring invalid distribution ~adquery-ocp (C:\Python313_64bit\Lib\site-packages)
Collecting nicegui
  Downloading nicegui-3.9.0-py3-none-any.whl.metadata (11 kB)
...
Successfully installed aiofiles-25.1.0 httptools-0.7.1 ifaddr-0.2.0 lxml-html-clean-0.4.4 markdown2-2.5.5 nicegui-3.9.0

You can find some examples on the official webpage.

News : Release 0.8.0 of mt940 library.

The mt940 is a library to parse MT940 files. MT940 is a specific SWIFT message type used by the SWIFT network to send and receive end-of-day bank account statements.

The install is easy with the pip tool:

pip install mt940==0.8.0

See the type file MT940 and the .

See the released on the official webpage.

Python Qt6 : Folder encrypt and decrypt tool with PBKDF2 SALT derived key.

This script securely encrypts both the contents and the name of a folder using a password‑derived Fernet key (AES‑128 + HMAC), where PBKDF2 with a fixed SALT key.

A SALT is used in password‑based key derivation. If your system had no SALT, and someone used a weak password, an attacker could instantly look up the key in a rainbow table.

With a SALT the attacker would need a separate rainbow table for every possible SALT, which is infeasible.

SALT does NOT protect against brute‑force, because PBKDF2 treats the SALT as an input parameter, not as part of the password’s entropy.

Python Qt6 : schemdraw - 001.

Today, simple example with PyQt6 and schemdraw :

# -*- coding: utf-8 -*-
import sys
import schemdraw
import schemdraw.elements as elm
from PyQt6.QtWidgets import QApplication, QWidget, QLabel, QPushButton, QVBoxLayout, QScrollArea
from PyQt6.QtGui import QPixmap
def draw_bistabil_grid(state):
    """
    state = 0 -> switch spre R3, LED1 aprins
    state = 1 -> switch spre R4, LED2 aprins
    """
    with schemdraw.Drawing(file='bistabil_grid.png', show=False) as d:
        d.config(unit=2.0)

        # Y COORDINATES
        y_led = 0.0
        y_r1  = -2.0
        y_rfb = -4.0
        y_swT = -7.0
        y_gnd = -10.0

        # X COORDINATES
        x_left   = -6.0
        x_right  = 6.0
        x_t1     = -3.0
        x_t2     = 3.0
        x_sw     = 0.0

        # COLORS
        col_T1 = 'green'
        col_T2 = 'orange'

        # LED-uri colorate în funcție de state
        led1_color = 'red' if state == 0 else 'gray'
        led2_color = 'red' if state == 1 else 'gray'

        # 1. LED1 and LED2
        led1 = d.add(elm.LED().down().at((x_left, y_led)).color(led1_color).label('LED1'))
        led2 = d.add(elm.LED().down().at((x_right, y_led)).color(led2_color).label('LED2'))

        # 2. R1 and R2
        r1 = d.add(elm.Resistor().down().at(led1.end).label('R1'))
        r2 = d.add(elm.Resistor().down().at(led2.end).label('R2'))

        n_r1 = d.add(elm.Dot().at(r1.end))
        n_r2 = d.add(elm.Dot().at(r2.end))

        # 3. R3 and R4 (feedback)
        d.add(elm.Line().at(n_r1.center).to((x_t1, y_rfb)))
        r3 = d.add(elm.Resistor().right().at((x_t1, y_rfb)).label('R3'))
        n_r3 = d.add(elm.Dot().at(r3.end))

        d.add(elm.Line().at(n_r2.center).to((x_t2, y_rfb)))
        r4 = d.add(elm.Resistor().left().at((x_t2, y_rfb)).label('R4'))
        n_r4 = d.add(elm.Dot().at(r4.end))

        # 4. Transistors
        t1 = d.add(
            elm.BjtNpn()
            .left()
            .flip()
            .at((x_t1, y_swT))
            .anchor('base')
            .label('T1')
        )

        t2 = d.add(
            elm.BjtNpn()
            .right()
            .at((x_t2, y_swT))
            .anchor('base')
            .label('T2')
        )

        # BASE CONNECTIONS
        d.add(elm.Line().at(n_r4.center).to(t1.base).color(col_T1))
        d.add(elm.Line().at(n_r3.center).to(t2.base).color(col_T2))

        # COLLECTOR CONNECTIONS
        d.add(elm.Line().at(t1.collector).to(n_r1.center).color(col_T1))
        d.add(elm.Line().at(t2.collector).to(n_r2.center).color(col_T2))

        # -------------------------------
        # 5. SWITCH SPDT DESENAT MANUAL
        # -------------------------------

        # Punctele a, b, c
        a = d.add(elm.Dot().at((x_sw - 1, y_swT)))
        b = d.add(elm.Dot().at((x_sw,     y_swT)))
        c = d.add(elm.Dot().at((x_sw + 1, y_swT)))

        # Linii FIXE către R3 și R4
        d.add(elm.Line().at(n_r3.center).to(a.center))
        d.add(elm.Line().at(n_r4.center).to(c.center))

        # Linia FIXĂ către GND
        d.add(elm.Line().at(b.center).to((b.center[0], y_gnd)))

        # Brațul mobil (UNICA linie care se mișcă)
        if state == 0:
            d.add(elm.Line().at(b.center).to(a.center))
        else:
            d.add(elm.Line().at(b.center).to(c.center))

        # 6. Ground bus
        d.add(
            elm.Line()
            .at((x_left - 2, y_gnd))
            .to((x_right + 2, y_gnd))
            .label('0V', loc='bottom')
        )
        d.add(elm.Ground().at((x_left - 2, y_gnd)))

        # EMITTERS TO GND
        d.add(elm.Line().at(t1.emitter).to((t1.emitter[0], y_gnd)).color(col_T1))
        d.add(elm.Line().at(t2.emitter).to((t2.emitter[0], y_gnd)).color(col_T2))


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

        self.state = 0

        self.setWindowTitle("Bistabil Animat – Schema completă")

        # Scroll area
        self.scroll = QScrollArea()
        self.label = QLabel()
        self.scroll.setWidget(self.label)
        self.scroll.setWidgetResizable(True)

        self.button = QPushButton("Comută switch-ul")
        self.button.clicked.connect(self.toggle_switch)

        layout = QVBoxLayout()
        layout.addWidget(self.scroll)
        layout.addWidget(self.button)
        self.setLayout(layout)

        self.update_image()

    def toggle_switch(self):
        self.state = 1 - self.state
        self.update_image()

    def update_image(self):
        draw_bistabil_grid(self.state)
        pix = QPixmap("bistabil_grid.png")
        self.label.setPixmap(pix)

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

News : Major new features of the 3.15 series, compared to 3.14

Python 3.15 is still in development. This release, 3.15.0a7, is the seventh of eight planned alpha releases.

...The JIT compiler has been significantly upgraded, with 3-4% geometric mean performance improvement on x86-64 Linux over the standard interpreter, and 7-8% speedup on AArch64 macOS over the tail-calling interpreter

See the official blog website .

Python Qt6 : testing with PyQt and llama3.1:8b.

Today, I tested the ollama with pyqt6 and works great:

Python 3.13.0 : schemdraw high-quality electrical circuit schematic.

Schemdraw is a Python package for producing high-quality electrical circuit schematic diagrams. Circuit elements are added, one at a time, similar to how you might draw them by hand, using Python methods.

This is the install step with pip tool:

pip install schemdraw
WARNING: Ignoring invalid distribution ~adquery-ocp (C:\Python313_64bit\Lib\site-packages)
Collecting schemdraw
  Downloading schemdraw-0.22-py3-none-any.whl.metadata (2.2 kB)
Downloading schemdraw-0.22-py3-none-any.whl (148 kB)
WARNING: Ignoring invalid distribution ~adquery-ocp (C:\Python313_64bit\Lib\site-packages)
Installing collected packages: schemdraw
WARNING: Ignoring invalid distribution ~adquery-ocp (C:\Python313_64bit\Lib\site-packages)
Successfully installed schemdraw-0.22

Python 3.13.0 : webcam Falticeni - processing HLS .m3u8 video stream.

Python can process data from an HLS (.m3u8) video stream, such as the one used on the Fălticeni webcam page (which loads the stream through index.m3u8).

Python 3.13.0 : the manim python module - part 002.

The last tutorial was on this post.

The manim packege can be install with pip tool:

pip install manim
...
Successfully installed audioop-lts-0.2.2 av-16.1.0 cloup-3.0.8 glcontext-3.0.0 isosurfaces-0.1.2 manim-0.20.1 manimpango-0.6.1 mapbox-earcut-2.0.0 moderngl-5.12.0 moderngl-window-3.1.1 pycairo-1.29.0 pydub-0.25.1 pyglet-2.1.13 pyglm-2.8.3 screeninfo-0.8.1 skia-pathops-0.9.2 srt-3.5.3

The last tutorial was on this post.

Python 3.13.0 : simple script for update all python packages.

Simple script for update all python packages:

import subprocess
import sys
import datetime

log_file = "upgrade_log.txt"

def log(msg):
    with open(log_file, "a", encoding="utf-8") as f:
        f.write(msg + "\n")
    print(msg)

def get_installed_packages():
    result = subprocess.run(
        [sys.executable, "-m", "pip", "list", "--format=freeze"],
        capture_output=True,
        text=True
    )
    lines = result.stdout.strip().split("\n")
    packages = []
    for line in lines:
        if "@" in line:  # skip direct URL installs
            pkg = line.split("@")[0]
        else:
            pkg = line.split("==")[0]
        packages.append(pkg)
    return sorted(packages)

def upgrade_package(package):
    log(f"\n=== Updating: {package} ===")
    try:
        subprocess.check_call([sys.executable, "-m", "pip", "install", "--upgrade", package])
        log(f"[OK] Updated: {package}")
    except subprocess.CalledProcessError:
        log(f"[FAILED] Could not update: {package}")

def main():
    log(f"\n--- Upgrade started at {datetime.datetime.now()} ---\n")

    packages = get_installed_packages()
    log(f"Found {len(packages)} packages.\n")

    for pkg in packages:
        upgrade_package(pkg)

    log(f"\n--- Upgrade finished at {datetime.datetime.now()} ---\n")

if __name__ == "__main__":
    main()

Python 3.13.0 : build123d the BREP for 2D and 3D CAD.

build123d is a Python-based, parametric boundary representation (BREP) modeling framework for 2D and 3D CAD. Built on the Open Cascade geometric kernel, it provides a clean, fully Pythonic interface for creating precise models suitable for 3D printing, CNC machining, laser cutting, and other manufacturing processes.

You can find more about this project on the GitHub repo.

python -m pip install build123d
Collecting build123d
  Downloading build123d-0.10.0-py3-none-any.whl.metadata (6.7 kB)
...
Successfully installed anytree-2.13.0 asttokens-3.0.1 build123d-0.10.0 cadquery-ocp-7.8.1.1.post1 cadquery_ocp_proxy-7.9.3.1 cadquery_vtk-9.3.1 decorator-5.2.1 executing-2.2.1 ezdxf-1.4.3 ipython-9.10.0 ipython-pygments-lexers-1.1.1 lib3mf-2.5.0 matplotlib-inline-0.2.1 ocp_gordon-0.2.0 ocpsvg-0.5.0 pure-eval-0.2.3 stack_data-0.6.3 svgelements-1.9.6 svgpathtools-1.7.2 traitlets-5.14.3 trianglesolver-1.2 webcolors-24.8.0

News : PySimpleGUI planned shutdown

The PySimpleGUI project’s planned shutdown was first announced in February 2025. At that time, we committed to supporting our Commercial customers through the end of 2025. PySimpleGUI 5 remained a very stable product throughout the year, with no significant issues reported.

Now that we’ve reached the end of that support period, the project is entering its final stage. During January 2026, the PySimpleGUI website, documentation, and PyPI servers will be taken offline as we officially close the project.

The private PyPI server will be shut down in January 2026 . If you currently install PySimpleGUI 5 using pip, you’ll need to switch to installing from a local wheel file instead.