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from textual.app import App, ComposeResult
from textual.widgets import Footer, Header
class StopwatchApp(App):
"""A Textual app to manage stopwatches."""
BINDINGS = [("d", "toggle_dark", "Toggle dark mode")]
def compose(self) -> ComposeResult:
"""Create child widgets for the app."""
yield Header()
yield Footer()
def action_toggle_dark(self) -> None:
"""An action to toggle dark mode."""
self.theme = (
"textual-dark" if self.theme == "textual-light" else "textual-light"
)
if __name__ == "__main__":
app = StopwatchApp()
app.run()
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