Break语句

块可以用一个 break 语句跳出。break语句可以跳出一个 while, for, 或 block 语句. 它跳出最内层的结构, 除非给定一个块标签:

block myblock:
  echo "entering block"
  while true:
    echo "looping"
    break # 跳出循环,但不跳出块
  echo "still in block"
 
block myblock2:
  echo "entering block"
  while true:
    echo "looping"
    break myblock2 # 跳出块 (和循环)
  echo "still in block"