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renpy.watch

Function: renpy.watch (expression, style='default', **properties):

This watches the given python expression, by displaying it in the upper-left corner of the screen (although position properties can change that). The expression should always be defined, never throwing an exception.

A watch will not persist through a save or restart.

Example

init:
    $ renpy.watch("renpy.get_filename_line()")



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