def read(self, filename, archived=False):
idx = 1
with open(filename, 'r') as f:
for line in f:
line = line.strip()
if line == "":
continue
task = Task(idx, archived)
task.parse(line)
self._tasks.append(task)
idx += 1
if task.projects is not None:
for n in task.projects:
if not self._projects.has_key(n):
self._projects[n] = Project(n)
self._projects[n].addTask(task)
