(env=None)
Push a env in the stack. If env is None, a new Environment is created.
Push a env in the stack. If env is None, a new Environment is created.
Push a env in the stack . If env is None a new Environment is created .
def push_env(env=None):
    """Push a env in the stack. If env is None, a new Environment is created."""
    if env is None:
        env = Environment()
    ENVIRONMENTS_STACK.append(env)
def push_env ( env = None ) : if env is None : env = Environment ( ) ENVIRONMENTS_STACK . append ( env )