qtwrap 1.0.2

A PyQt6 toolkit for wrapping scripts in a GUI with live stdout capture

qtwrap

A PyQt6 toolkit for wrapping standard Python scripts in a GUI.

Requirements

• Python >= 3.12

Installation

pip install qtwrap

or, to add it to a uv-managed project:

uv add qtwrap

Quick Start

A simple window allowing to capture the stdout and stderr of the given function with Exception handling.

import time
from PyQt6.QtWidgets import QApplication, QWidget, QPushButton, QTextEdit, QVBoxLayout, QComboBox
from qtwrap import LogLevel, DirectorySelector, ChoiceSelector, ScriptCaptureWindow

class MainWindow(ScriptCaptureWindow):
    def __init__(self, func):
        super().__init__(func)

        self.setWindowTitle("MainWindow")
        self.setGeometry(100, 100, 800, 600)

        widget = QWidget()
        layout = QVBoxLayout()

        self.__output = QTextEdit()
        self.__dir = DirectorySelector()
        self.__choice = ChoiceSelector("one", "two", "three")
        self.__btn = QPushButton("Start")

        layout.addWidget(self.__dir)
        layout.addWidget(self.__choice)
        layout.addWidget(self.__btn)
        layout.addWidget(self.__output)
        widget.setLayout(layout)

        self.setCentralWidget(widget)
        self.set_output_field(self.__output)
        self.__btn.clicked.connect(self.__start)

        self.show()

    def __args(self):
        return {
            "path": self.__dir.path(),
            "choices": self.__choice.choice()
        }

    def __start(self):
        if len(self.__dir.path()) == 0:
            self.status("The path must be set.", LogLevel.ERROR)
            return

        if len(self.__choice.choice()) == 0:
            self.status("Make a choice.", LogLevel.ERROR)
            return

        self._started(kwargs=self.__args())

def f(path: str, choices: list):
    for _ in range(5):
        print(f"{path=} | {choices=}")
        time.sleep(0.3)
    print(1/0)

app = QApplication([])
window = MainWindow(f)
app.exec()

Features

• Live output capture — stdout and stderr from the wrapped function are streamed into the GUI as they're produced, including output from background threading.Threads spawned inside it, not just the main call.
• Non-blocking execution — the wrapped function runs on a separate thread, so the GUI stays responsive while it works.
• Automatic input locking — all input widgets are disabled while the script runs and re-enabled automatically once it finishes, without any manual wiring per widget.
• Exception handling — unhandled exceptions, including ones raised inside child threads, are caught and displayed in the output field with a full traceback instead of crashing or printing to the console.
• Ready-made input widgets — DirectorySelector, FileSelector, and ChoiceSelector cover common script inputs out of the box.
• Status bar & output saving — built-in status messages for validation/errors, plus a menu action to save the captured output to a file.

License

This project is licensed under the terms of the LICENSE file included in this repository.