Laszlo Nagy wrote:
> This program:
>
> import sys
> import traceback
> import cStringIO
>
> a = 1.0
> b = 0.0
> try:
> c=a/b
> except:
> f = cStringIO.StringIO('')
> ei = sys.exc_info()
> traceback.print_exception(ei[0],ei[1],ei[2],file=f)
>
> raises this exception:
>
> Traceback (most recent call last):
> File "C:/Documents and Settings/gandalf/test.py", line 12, in ?
> traceback.print_exception(ei[0],ei[1],ei[2],file=f)
> File "C:\Python24\Lib\traceback.py", line 124, in print_exception
> _print(file, 'Traceback (most recent call last):')
> File "C:\Python24\Lib\traceback.py", line 13, in _print
> file.write(str+terminator)
> AttributeError: 'cStringIO.StringI' object has no attribute 'write'
>
> What is 'cStringIO.StringI' anyway? Shouldn't it be 'cStringIO.StringIO'?
See http://docs.python.org/lib/module-cStringIO.html:
"""
Another difference from the StringIO module is that calling StringIO() with
a string parameter creates a read-only object. Unlike an object created
without a string parameter, it does not have write methods. These objects
are not generally visible. They turn up in tracebacks as StringI and
StringO.
"""
Peter
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