This is proving to be a recurring problem for me.
First, I used the save() method of a Python Imaging Library "Image"
object to write directly to the "wfile" of a BaseHTTPRequestHandler-
derived class:
pic.save(self.wfile, 'JPEG')
Worked great in Linux, barfed in Windows. I had to do this to get around
it:
out = StringIO()
pic.save(out, 'JPEG')
encoded = out.getvalue()
self.wfile.write(encoded)
Now, I have a similar problem with subprocess.Popen... The code that
works in Linux looks like this:
source = urllib.urlopen(url)
child = subprocess.Popen(cmd, stdout=subprocess.PIPE, stdin=source)
try:
shutil.copyfileobj(child.stdout, self.wfile)
except:
kill(child.pid)
But wfile isn't the problem this time; instead, it's the source:
...
child = subprocess.Popen(cmd, stdout=subprocess.PIPE, stdin=source)
File "C:\Python25\lib\subprocess.py", line 586, in __init__
errread, errwrite) = self._get_handles(stdin, stdout, stderr)
File "C:\Python25\lib\subprocess.py", line 698, in _get_handles
p2cread = msvcrt.get_osfhandle(stdin.fileno())
IOError: [Errno 9] Bad file descriptor
How can I get around this, short of resorting to copying all of the input
before passing it to the child?
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09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0 -- pass it on
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