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General exception classes.

DuplicateKeyHandlers class

Bases: TextualError

More than one handler for a single key press.

For example, if the handlers key_ctrl_i and key_tab were defined on the same widget, then this error would be raised.

NoWidget class

Bases: TextualError

Specified widget was not found.

RenderError class

Bases: TextualError

An object could not be rendered.

TextualError class

Bases: Exception

Base class for Textual errors.