def list_backends():
    return ['ni'] + [name for (loader, name, ispkg) in pkgutil.iter_modules()
                     if name.startswith('pyvisa-')]


#: Maps backend name to VisaLibraryBase derived class
#: dict[str, :class:`pyvisa.highlevel.VisaLibraryBase`]
Return installed backends.
dataset/ETHPy150Open hgrecco/pyvisa/pyvisa/highlevel.py/list_backends