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ScreenReader
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.. class:: ScreenReader

   ScreenReader provides access to virtual widget trees for applications identified by process ID.

   .. method:: __init__() -> None

     Create a new ScreenReader instance.

   .. method:: from_pid(pid) -> PyScreenReader.virtual_widgets.VirtualWidget

     Retrieve the virtual widget tree associated with the specified process ID (PID).

   :param pid: The process ID identifying the target application.
   :return: Shared pointer to the VirtualWidget corresponding to the given PID.