I was trying to use the following syntax in Jython but I get an exception:
>>> t = {}
>>> exec open(filename) in t
Traceback (innermost last):
File "install.py", line 381, in ?
File "install.py", line 47, in run
File "install.py", line 71, in detectComponents
File "install.py", line 89, in readProperties
TypeError: exec: argument 1 must be string or code object
This works in CPython and appears to be part of the spec:
"The first expression should evaluate to either a string, an open file
object, or a code object. ... If it is an open file, the file is parsed
until EOF and executed."
http://python.org/doc/current/ref/exec.html
Additionally, in CPython 2.0, if the file is closed it is re-opened and
executed.
I also tested whether StringIO could be substited for a file and it appears
to fail:
>>> from StringIO import StringIO
>>> s = StringIO("a = 'x'")
>>> s
<StringIO.StringIO instance at 007E1C1C>
>>> t = {}
>>> exec s in t
Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: exec 1st arg must be string, code or file object
>>>
Given this, I've enclosed a working diff which mimics the exact behaviour of
CPython 2.0.
thanks,
brian
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