[MERGE] Repository.iter_files_bytes()

[John Arbash Meinel]

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> 
>     Andrew> Huh?  It sounds like you're saying that code like:
> 
>     Andrew>     # foo.py
>     Andrew>     x = 1
>     Andrew>     def func():
>     Andrew>         x = 2
>     Andrew>     func()
>     Andrew>     print x == 1
> 
>     Andrew> would print False, which is clearly not the case in
>     Andrew> Python.  Assignment in a function doesn't modify
>     Andrew> globals unless there is a “global” declaration in
>     Andrew> that function, or unless I'm missing some very nasty
>     Andrew> magic.
> 
> It seems it is nasty black magic indeed :)
> 
> Good hunt :)
> 
>      Vincent
> 
> 

I'm pretty sure that the issue is that gettext sets the "_"
function/operator/variable in "__builtins__". The wanted to do that so
it would be available everywhere, without having to do "from gettext
import gettext as _" at the top of every module (bringing it into your
globals).

However, as a builtin, it then has a single binding, and assigning to it
*modifies the builtin*.

So try:

# foo.py
import __builtins__
__builtins__.x = 1

def func():
  x = 2
func()
print x

John
=:->
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