Joshua Ginsberg wrote:
> I'm a bit baffled by something...
>
> In a script I wrote, I have defined a function that runs
> urllib2.urlopen() on a urllib2.Request object and returns the file-like
> object. The code that calls this function attempts to build a
> csv.DictReader object based on that file-like object, but an error is
> thrown saying the file-like object is not an iterator.
>
> I could have sworn urllib2.urlopen returned an iterator, so I tested:
>
> Python 2.3 (#1, Sep 13 2003, 00:49:11)
> [GCC 3.3 20030304 (Apple Computer, Inc. build 1495)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import urllib2
> >>> r = urllib2.Request('http://www.google.com')
> >>> ifs = urllib2.urlopen(r)
> >>> dir(ifs)
> ['__doc__', '__init__', '__iter__', '__module__', '__repr__', 'close',
> 'fileno', 'fp', 'geturl', 'headers', 'info', 'next', 'read',
> 'readline', 'readlines', 'url']
>
> Yep. But what about in my code? I modify my code to print dir(ifs)
> before creating the DictReader...
>
> ['__doc__', '__init__', '__module__', '__repr__', 'close', 'fp',
> 'geturl', 'headers', 'info', 'read', 'readline', 'url']
> Traceback (most recent call last):
> File "CSVParser.py", line 144, in ?
> print parseQHost(circuits[cktname], cktname)
> File "CSVParser.py", line 126, in parseQHost
> r = csv.DictReader(ifs, fieldlist)
> File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/
> python2.3/csv.py", line 100, in __init__
> self.reader = reader(f, dialect, *args)
> TypeError: argument 1 must be an iterator
>
> Whoa! Where did the __iter__, readlines, and next attributes go? Ideas?
Works for me on Python 2.4.1.
--
Michael Hoffman
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