def load(self):
if not os.path.exists(self.path):<EOL><INDENT>return<EOL><DEDENT>with open(self.path, '<STR_LIT:r>') as f:<EOL><INDENT>env_data = yaml.load(f.read())<EOL><DEDENT>if env_data:<EOL><INDENT>for env in env_data:<EOL><INDENT>self.add(VirtualEnvironment(env['<STR_LIT:root>']))<EOL><DEDENT><DEDENT>
Load the environment cache from disk.