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App crash with spamming keyboard input, when running in --dev mode and with a console attached
See original GitHub issuetextual, version 0.1.15 – css branch, macOS
While evaluating the css branch, and working through the upcoming docs, I was looking at the section regarding running an application in --dev mode, with a textual console attached. Testing this with the stopwatch.py example, I started rapidly hitting the A and R keys to generate lots of output in the console. Quite quickly I got a number of instances of the terminal bell ringing followed by a crash:
╭──────────────────────────────────────────────────────────── Traceback (most recent call last) ─────────────────────────────────────────────────────────────╮
│ /Users/davep/temp/textual/src/textual/widget.py:1832 in _on_mount │
│ │
│ 1829 │ │
│ 1830 │ def _on_mount(self, event: events.Mount) -> None: │
│ 1831 │ │ widgets = self.compose() │
│ ❱ 1832 │ │ self.mount(*widgets) │
│ 1833 │ │ # Preset scrollbars if not automatic │
│ 1834 │ │ if self.styles.overflow_y == "scroll": │
│ 1835 │ │ │ self.show_vertical_scrollbar = True │
│ │
│ ╭─────────────────────────── locals ────────────────────────────╮ │
│ │ event = Mount() │ │
│ │ self = Stopwatch() │ │
│ │ widgets = <generator object Stopwatch.compose at 0x1039b7ca0> │ │
│ ╰───────────────────────────────────────────────────────────────╯ │
│ │
│ /Users/davep/temp/textual/src/textual/widget.py:326 in mount │
│ │
│ 323 │ │ │
│ 324 │ │ """ │
│ 325 │ │ self.app._register(self, *anon_widgets, **widgets) │
│ ❱ 326 │ │ self.screen.refresh(layout=True) │
│ 327 │ │
│ 328 │ def compose(self) -> ComposeResult: │
│ 329 │ │ """Called by Textual to create child widgets. │
│ │
│ ╭─────────────────────────────────────────────────────────── locals ────────────────────────────────────────────────────────────╮ │
│ │ anon_widgets = (Button(id='start', variant='success'), Button(id='stop', variant='error'), Button(id='reset'), TimeDisplay()) │ │
│ │ self = Stopwatch() │ │
│ │ widgets = {} │ │
│ ╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯ │
│ │
│ /Users/davep/temp/textual/src/textual/dom.py:269 in screen │
│ │
│ 266 │ │ while node and not isinstance(node, Screen): ╭───────────────── locals ─────────────────╮ │
│ 267 │ │ │ node = node._parent │ node = None │ │
│ 268 │ │ if not isinstance(node, Screen): │ Screen = <class 'textual.screen.Screen'> │ │
│ ❱ 269 │ │ │ raise NoScreen(f"{self} has no screen") │ self = Stopwatch() │ │
│ 270 │ │ return node ╰──────────────────────────────────────────╯ │
│ 271 │ │
│ 272 │ @property │
╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
NoScreen: Stopwatch() has no screen
╭──────────────────────────────────────────────────────────── Traceback (most recent call last) ─────────────────────────────────────────────────────────────╮
│ /Users/davep/temp/textual/src/textual/widget.py:1832 in _on_mount │
│ │
│ 1829 │ │
│ 1830 │ def _on_mount(self, event: events.Mount) -> None: │
│ 1831 │ │ widgets = self.compose() │
│ ❱ 1832 │ │ self.mount(*widgets) │
│ 1833 │ │ # Preset scrollbars if not automatic │
│ 1834 │ │ if self.styles.overflow_y == "scroll": │
│ 1835 │ │ │ self.show_vertical_scrollbar = True │
│ │
│ ╭─────────────────────────────── locals ────────────────────────────────╮ │
│ │ event = Mount() │ │
│ │ self = Button(id='start', classes={'-success'}, variant='success') │ │
│ │ widgets = <generator object Widget.compose at 0x103a3daf0> │ │
│ ╰───────────────────────────────────────────────────────────────────────╯ │
│ │
│ /Users/davep/temp/textual/src/textual/widget.py:326 in mount │
│ │
│ 323 │ │ │
│ 324 │ │ """ │
│ 325 │ │ self.app._register(self, *anon_widgets, **widgets) │
│ ❱ 326 │ │ self.screen.refresh(layout=True) │
│ 327 │ │
│ 328 │ def compose(self) -> ComposeResult: │
│ 329 │ │ """Called by Textual to create child widgets. │
│ │
│ ╭────────────────────────────────── locals ──────────────────────────────────╮ │
│ │ anon_widgets = () │ │
│ │ self = Button(id='start', classes={'-success'}, variant='success') │ │
│ │ widgets = {} │ │
│ ╰────────────────────────────────────────────────────────────────────────────╯ │
│ │
│ /Users/davep/temp/textual/src/textual/dom.py:269 in screen │
│ │
│ 266 │ │ while node and not isinstance(node, Screen): │
│ 267 │ │ │ node = node._parent │
│ 268 │ │ if not isinstance(node, Screen): │
│ ❱ 269 │ │ │ raise NoScreen(f"{self} has no screen") │
│ 270 │ │ return node │
│ 271 │ │
│ 272 │ @property │
│ │
│ ╭─────────────────────────────── locals ───────────────────────────────╮ │
│ │ node = None │ │
│ │ Screen = <class 'textual.screen.Screen'> │ │
│ │ self = Button(id='start', classes={'-success'}, variant='success') │ │
│ ╰──────────────────────────────────────────────────────────────────────╯ │
╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
NoScreen: Button(id='start', classes={'-success'}, variant='success') has no screen
╭──────────────────────────────────────────────────────────── Traceback (most recent call last) ─────────────────────────────────────────────────────────────╮
│ /Users/davep/temp/textual/src/textual/widget.py:1832 in _on_mount │
│ │
│ 1829 │ │
│ 1830 │ def _on_mount(self, event: events.Mount) -> None: │
│ 1831 │ │ widgets = self.compose() │
│ ❱ 1832 │ │ self.mount(*widgets) │
│ 1833 │ │ # Preset scrollbars if not automatic │
│ 1834 │ │ if self.styles.overflow_y == "scroll": │
│ 1835 │ │ │ self.show_vertical_scrollbar = True │
│ │
│ ╭───────────────────────────── locals ─────────────────────────────╮ │
│ │ event = Mount() │ │
│ │ self = Button(id='stop', classes={'-error'}, variant='error') │ │
│ │ widgets = <generator object Widget.compose at 0x103a3da80> │ │
│ ╰──────────────────────────────────────────────────────────────────╯ │
│ │
│ /Users/davep/temp/textual/src/textual/widget.py:326 in mount │
│ │
│ 323 │ │ │
│ 324 │ │ """ │
│ 325 │ │ self.app._register(self, *anon_widgets, **widgets) │
│ ❱ 326 │ │ self.screen.refresh(layout=True) │
│ 327 │ │
│ 328 │ def compose(self) -> ComposeResult: │
│ 329 │ │ """Called by Textual to create child widgets. │
│ │
│ ╭─────────────────────────────── locals ────────────────────────────────╮ │
│ │ anon_widgets = () │ │
│ │ self = Button(id='stop', classes={'-error'}, variant='error') │ │
│ │ widgets = {} │ │
│ ╰───────────────────────────────────────────────────────────────────────╯ │
│ │
│ /Users/davep/temp/textual/src/textual/dom.py:269 in screen │
│ │
│ 266 │ │ while node and not isinstance(node, Screen): │
│ 267 │ │ │ node = node._parent │
│ 268 │ │ if not isinstance(node, Screen): │
│ ❱ 269 │ │ │ raise NoScreen(f"{self} has no screen") │
│ 270 │ │ return node │
│ 271 │ │
│ 272 │ @property │
│ │
│ ╭──────────────────────────── locals ─────────────────────────────╮ │
│ │ node = None │ │
│ │ Screen = <class 'textual.screen.Screen'> │ │
│ │ self = Button(id='stop', classes={'-error'}, variant='error') │ │
│ ╰─────────────────────────────────────────────────────────────────╯ │
╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
NoScreen: Button(id='stop', classes={'-error'}, variant='error') has no screen
╭──────────────────────────────────────────────────────────── Traceback (most recent call last) ─────────────────────────────────────────────────────────────╮
│ /Users/davep/temp/textual/src/textual/widget.py:1832 in _on_mount │
│ │
│ 1829 │ │
│ 1830 │ def _on_mount(self, event: events.Mount) -> None: │
│ 1831 │ │ widgets = self.compose() │
│ ❱ 1832 │ │ self.mount(*widgets) │
│ 1833 │ │ # Preset scrollbars if not automatic │
│ 1834 │ │ if self.styles.overflow_y == "scroll": │
│ 1835 │ │ │ self.show_vertical_scrollbar = True │
│ │
│ ╭────────────────────────── locals ──────────────────────────╮ │
│ │ event = Mount() │ │
│ │ self = Button(id='reset', classes={'-default'}) │ │
│ │ widgets = <generator object Widget.compose at 0x103a3d8c0> │ │
│ ╰────────────────────────────────────────────────────────────╯ │
│ │
│ /Users/davep/temp/textual/src/textual/widget.py:326 in mount │
│ │
│ 323 │ │ │
│ 324 │ │ """ │
│ 325 │ │ self.app._register(self, *anon_widgets, **widgets) │
│ ❱ 326 │ │ self.screen.refresh(layout=True) │
│ 327 │ │
│ 328 │ def compose(self) -> ComposeResult: │
│ 329 │ │ """Called by Textual to create child widgets. │
│ │
│ ╭──────────────────────── locals ─────────────────────────╮ │
│ │ anon_widgets = () │ │
│ │ self = Button(id='reset', classes={'-default'}) │ │
│ │ widgets = {} │ │
│ ╰─────────────────────────────────────────────────────────╯ │
│ │
│ /Users/davep/temp/textual/src/textual/dom.py:269 in screen │
│ │
│ 266 │ │ while node and not isinstance(node, Screen): ╭───────────────────── locals ──────────────────────╮ │
│ 267 │ │ │ node = node._parent │ node = None │ │
│ 268 │ │ if not isinstance(node, Screen): │ Screen = <class 'textual.screen.Screen'> │ │
│ ❱ 269 │ │ │ raise NoScreen(f"{self} has no screen") │ self = Button(id='reset', classes={'-default'}) │ │
│ 270 │ │ return node ╰───────────────────────────────────────────────────╯ │
│ 271 │ │
│ 272 │ @property │
╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
NoScreen: Button(id='reset', classes={'-default'}) has no screen
╭──────────────────────────────────────────────────────────── Traceback (most recent call last) ─────────────────────────────────────────────────────────────╮
│ /Users/davep/temp/textual/src/textual/widget.py:1832 in _on_mount │
│ │
│ 1829 │ │
│ 1830 │ def _on_mount(self, event: events.Mount) -> None: │
│ 1831 │ │ widgets = self.compose() │
│ ❱ 1832 │ │ self.mount(*widgets) │
│ 1833 │ │ # Preset scrollbars if not automatic │
│ 1834 │ │ if self.styles.overflow_y == "scroll": │
│ 1835 │ │ │ self.show_vertical_scrollbar = True │
│ │
│ ╭────────────────────────── locals ──────────────────────────╮ │
│ │ event = Mount() │ │
│ │ self = TimeDisplay() │ │
│ │ widgets = <generator object Widget.compose at 0x103a3c970> │ │
│ ╰────────────────────────────────────────────────────────────╯ │
│ │
│ /Users/davep/temp/textual/src/textual/widget.py:326 in mount │
│ │
│ 323 │ │ ╭─────────── locals ───────────╮ │
│ 324 │ │ """ │ anon_widgets = () │ │
│ 325 │ │ self.app._register(self, *anon_widgets, **widgets) │ self = TimeDisplay() │ │
│ ❱ 326 │ │ self.screen.refresh(layout=True) │ widgets = {} │ │
│ 327 │ ╰──────────────────────────────╯ │
│ 328 │ def compose(self) -> ComposeResult: │
│ 329 │ │ """Called by Textual to create child widgets. │
│ │
│ /Users/davep/temp/textual/src/textual/dom.py:269 in screen │
│ │
│ 266 │ │ while node and not isinstance(node, Screen): ╭───────────────── locals ─────────────────╮ │
│ 267 │ │ │ node = node._parent │ node = None │ │
│ 268 │ │ if not isinstance(node, Screen): │ Screen = <class 'textual.screen.Screen'> │ │
│ ❱ 269 │ │ │ raise NoScreen(f"{self} has no screen") │ self = TimeDisplay() │ │
│ 270 │ │ return node ╰──────────────────────────────────────────╯ │
│ 271 │ │
│ 272 │ @property │
╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
NoScreen: TimeDisplay() has no screen
Doing the same thing, with the console not running, the app ran fine and I could spam the add and remove keys as much as I liked without incident.
Issue Analytics
- State:
- Created a year ago
- Comments:6 (3 by maintainers)
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Thanks, managed to reproduce that.
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