Add python code

LICENSE

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+Copyright (c) 2018 The Python Packaging Authority
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+This is a simple example package. You can use
+[GitHub-flavored Markdown](https://guides.github.com/features/mastering-markdown/)
+to write your content.

pyproject.toml

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+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "leek"
+version = "0.0.1"
+dependencies = [
+    "PySide6"
+]
+description = "A small example package"
+readme = "README.md"
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "Operating System :: OS Independent",
+]
+
+[project.scripts]
+leek = "leek.leek:main"

src/leek/leek.py

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+from PySide6.QtWidgets import QApplication, QWidget
+import sys
+
+
+def main():
+    # If you know you won't use command line arguments QApplication([]) works too.
+    app = QApplication(sys.argv)
+
+    # Create a Qt widget, which will be our window.
+    window = QWidget()
+    window.show()  # IMPORTANT!!!!! Windows are hidden by default.
+
+    # Start the event loop.
+    app.exec()