Issue1691096

Ditto (simplejson 1.7)


$ jython
Jython 2.2b1 on java1.6.0 (JIT: null)
Type "copyright", "credits" or "license" for more information.
>>> from __future__ import generators
>>> import sys
>>> sys.path.append("/usr/lib64/python2.4/site-packages")
>>> sys.path=sys.path[1:]
>>> import simplejson.scanner
Traceback (innermost last):
  File "<console>", line 1, in ?
  File "/usr/lib64/python2.4/site-packages/simplejson/__init__.py", line 95, in ?
  File "/usr/lib64/python2.4/site-packages/simplejson/decoder.py", line 6, in ?
  File "/usr/lib64/python2.4/site-packages/simplejson/scanner.py", line 55
                        yield rval, matchend
                              ^
SyntaxError: invalid syntax

$ java -Djava.library.path=/usr/lib64/libreadline-java -classpath /usr/share/libreadline-java/lib/libreadline-java.jar:dist/jython.jar org.python.util.jython 
Jython 2.3a0 on java1.6.0
Type "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path.append("/usr/lib64/python2.4/site-packages")
>>> sys.path=sys.path[1:]
>>> import simplejson.scanner
>>> 

I have no idea about where the difference lies, but looks like the generator feature is "forgotten" in the process of importing.

Fixed Jython's forgetfulness in r3173.

This bug is actually invalid -- basically it lets futures 'leak' into 
other imported modules, which although is a solution to this problem, 
causes other problems (see #1886758 for an example).

So we can't support this -- CPython 2.2 doesn't support this leaking of 
futures either. Basically simplejson needs to import generators from 
future itself, or it's just not 2.2 compatible:

Python 2.2.3 (#1, Sep 19 2007, 11:27:07) 
[GCC 4.0.1 (Apple Computer, Inc. build 5367)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from __future__ import generators
>>> import simplejson.scanner
simplejson/scanner.py:56: Warning: 'yield' will become a reserved 
keyword in the future
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "simplejson/__init__.py", line 112, in ?
    from decoder import JSONDecoder
  File "simplejson/decoder.py", line 7, in ?
    from simplejson.scanner import Scanner, pattern
  File "simplejson/scanner.py", line 56
    yield rval, matchend
             ^
SyntaxError: invalid syntax
>>> 

i've reverted this part of the patch in trunk