[O] Something wrong with the src_python babel execution

[iemacs]

Hi,

I'm using GNU Emacs 24.4.4 (x86_64-apple-darwin13.4.0, Carbon Version
157 AppKit 1265.21) with Org-mode version 8.2.10
(8.2.10-29-g89a0ac-elpaplus).

Example file:

--8<---------------cut here---------------start------------->8---
#+BEGIN_SRC python :session test :exports none
a = 0.55
#+END_SRC

The result is src_python[:session test :results raw]{'${:.1f}$'.format(a)}.
--8<---------------cut here---------------end--------------->8---

This used to execute without any problem.  Now the related latex export is:

--8<---------------cut here---------------start------------->8---
The result is
\$'.format(a)\}.
--8<---------------cut here---------------end--------------->8---

And there are the outputs in the *test* session:

--8<---------------cut here---------------start------------->8---
>>> '${:.1f
'${:.1f
  File "<stdin>", line 1
    '${:.1f
          ^
SyntaxError: EOL while scanning string literal
--8<---------------cut here---------------end--------------->8---

Yours faithfully,

Tian Qiu