使用 do 块.关于 do 块的文档在这里.

Use a do block. Docs on do blocks are here.

下面是一个示例，说明如何在 Julia 中使用 Python 的 open(filename) as my_file 执行通常的 :

And here is an example of how to do the usual with open(filename) as my_file of Python in Julia:

open("sherlock-holmes.txt") do filehandle
  for line in eachline(filehandle)
      println(line)
  end
end

上面的例子也来自 Julia wikibooks.