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GPI Library Reference
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Cocotb contains a library called ``GPI`` (in directory :file:`src/cocotb/share/lib/gpi/`) written in C++
that is an abstraction layer for the VPI, VHPI, and FLI simulator interfaces.
.. image:: diagrams/svg/cocotb_overview.svg
The interaction between Python and GPI is via a Python extension module called ``simulator``
(in directory :file:`src/cocotb/share/lib/simulator/`) which provides routines for
traversing the hierarchy, getting/setting an object's value, registering callbacks etc.
.. doxygenfile:: gpi.h
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