with block for multiple files

[Yingjie Lan]

> Guido's time machine strikes again! It's already in Python
> 3; your
> example would be spelled:
> 
> with open('scores.csv') as f, open('grades.csv', wt) as g:
>     g.write(f.read())
> 

Indeed! Thanks, Chris and James.

Yingjie