Bugs item #1772794, was opened at 2007-08-13 02:17
Message generated for change (Settings changed) made by laukpe
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Pekka Laukkanen (laukpe)
Assigned to: Nobody/Anonymous (nobody)
>Summary: Telnetlib dosn't accept unicode containing only ascii
Initial Comment:
It is not possible to use unicode strings with telnetlib even if these strings
used only ascii characters. Example below demonstrates this.
Type "help", "copyright", "credits" or "license" for more information.
>>> import telnetlib
>>> telnetlib.Telnet().write(u'hi')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.5/telnetlib.py", line 289, in write
if IAC in buffer:
TypeError: 'in <string>' requires string as left operand
This problem is caused by bug #1772788 "chr(128) in u'only ascii' -> TypeError
with misleading msg". The relevant code is following and IAC is chr(255).
def write(self, buffer):
if IAC in buffer:
buffer = buffer.replace(IAC, IAC+IAC)
self.msg("send %r", buffer)
self.sock.sendall(buffer)
There are many pretty obvious ways to have a workaround for the issue. I
suggest something like follows assuming that accepting unicode data is ok in
general. If unicode is not ok then "pass" can be replaced with something like
"raise TypeError('Unicode data no accepted')" to at least have a better error
message.
def write(self, buffer):
try:
buffer = buffer.replace(IAC, IAC+IAC)
except UnicodeError:
pass
self.msg("send %r", buffer)
self.sock.sendall(buffer)
----------------------------------------------------------------------
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