in hexforge_modules/misc_modules.py [0:0]
def _nop_selected_bytes(self):
data = helper.get_selected_bytes()
if data is None:
idaapi.msg("Failed to get selected bytes.\n")
return
# create NOP array with the size of the selection
nop_data = bytearray(len(data))
nop_data[:] = b"\x90" * len(data)
# write the NOPs to the selected address range
helper.write_bytes_to_selected(nop_data)