[docs] python Documentation bugs

[谭奇]

Hi ：
I find bug for the use of keyword ‘with’, as follow:
with open('workfile', 'r') as f:
    read_data = f.read()
f.closed
url:https://docs.python.org/2/tutorial/inputoutput.html

f.closed is not necessary， as ‘with’  is very good handling exceptions

Thinks！

--
Growth-RD F2-403 谭奇
TEL：18513622028

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/docs/attachments/20160414/7041a38b/attachment-0001.html>