def __init__(self, text='', filename='', lookup=None):
if filename: text = open(filename, 'r').read()
self.source = text
self.parser = TemplateParser(lookup)
self.module_source = self.parser.translate(text, filename)
self.module_id = "memory:" + hex(id(self))
self.code = compile(self.module_source, self.module_id, 'exec')
self.module = ModuleType(self.module_id)
