Source code for nidaqmx.system._watchdog_modules.expiration_states_collection

import six

from nidaqmx.errors import DaqError
from nidaqmx.system._watchdog_modules.expiration_state import ExpirationState

[docs]class ExpirationStatesCollection(object): """ Contains the collection of expiration states for a DAQmx Watchdog Task. This class defines methods that implements a container object. """ def __init__(self, task_handle): self._handle = task_handle def __eq__(self, other): if isinstance(other, self.__class__): return self._handle == other._handle return False def __hash__(self): return hash(self._handle.value) def __ne__(self, other): return not self.__eq__(other) def __getitem__(self, index): """ Indexes an expiration state on this collection. Args: index (str): Name of the physical channel of which the expiration state to retrieve. Returns: nidaqmx.system._watchdog_modules.expiration_state.ExpirationState: The object representing the indexed expiration state. """ if isinstance(index, six.string_types): return ExpirationState(self._handle, index) else: raise DaqError( 'Invalid index type "{0}" used to access expiration states.' .format(type(index)), -1)