| from dataset import Dataset |
| |
| class Group(object): |
| |
| def __init__(self, name, dataset, parent=None, dimensions=[], attributes={}, variables={}): |
| """ |
| Creates a new group object with a given name and within the given dataset. An empty name |
| string marks the group as a root group within the dataset. Can also assign this group a |
| position in a group hierachy by specifying its parent group which must be another Group |
| instance assigned to the same dataset |
| >>> ds = Dataset() |
| >>> group = Group('', ds) |
| >>> print group.dataset |
| <CDM Dataset: None> |
| >>> print ds.root |
| <CDM Group: [root]> |
| >>> child1 = Group('child1', ds, parent=group) |
| >>> child2 = Group('child2', ds, parent=group) |
| >>> print child1.parent |
| <CDM Group: [root]> |
| >>> print child2.parent |
| <CDM Group: [root]> |
| >>> print group.children |
| [<CDM Group: child1>, <CDM Group: child2>] |
| """ |
| |
| self.name = name |
| self.dataset = dataset |
| self.parent = parent |
| self.variables = variables |
| self.attributes = attributes |
| self.dimensions = dimensions |
| self.children = [] |
| |
| # If there is no parent then this must be a root group which must have an empty |
| # string as the name |
| if (not parent): |
| dataset.root = self |
| self.name = '[root]' |
| |
| # Add group into a datasets group hierachy |
| elif (type(parent) == Group and parent.dataset == dataset): |
| self.parent = parent |
| parent.children.append(self) |
| |
| def __repr__(self): |
| return "<CDM %s: %s>" % (self.__class__.__name__, self.name) |
