parameters: (self, dev_name)
docstring: add a device into one context
          :param dev_name: <str> name of the device (created by user)
          :return: <int> 0: success , -1 : Fail.
docstring_summary: add a device into one context
          :param dev_name: <str> name of the device (created by user)
          :return: <int> 0: success , -1 : Fail.
docstring_tokens: add a device into one context : param dev_name : <str > name of the device ( created by user ) : return : <int > 0 : success - 1 : Fail .
function: def addDev(self, dev_name):
          """
          add a device into one context
          :param dev_name: <str> name of the device (created by user)
          :return: <int> 0: success , -1 : Fail.
          """
          check_call(
              _LIB.add_context_device(ctypes.c_void_p(self.context), c_str(dev_name))
          )
function_tokens: def addDev ( self , dev_name ) : check_call ( _LIB . add_context_device ( ctypes . c_void_p ( self . context ) , c_str ( dev_name ) ) )