"Late-binding" isn't the issue with closures on a loop

Lua also has late-binding closures, as can be seen here: https://repl.it/repls/HotpinkEagerQuery (the first one intentionally misused to highlight the difference between block scope and function scope)

It just also has block scope. That's the thing python doesn't have, thus causing the confusion.

Block scope is better emulated with nested functions, such as:

for i in range(5):
  def block_scope_emulation(i):
    def thing(x):
      return x*i
  block_scope_emulation(i)

找到指南中解释循环内闭包的段落，并将其措辞与链接的 Lua 示例以及 issue 中的嵌套函数示例进行比较。完成的标准是，解释能够区分延迟绑定和块作用域，并准确描述 Python 的行为。