[issue14556] telnetlib Telnet.expect fails with timeout=0

Irit Katriel added the comment: This has been fixed by now: Running Release|x64 interpreter... Python 3.10.0a2+ (heads/bpo-42482:920f808f50, Nov 29 2020, 23:02:47) [MSC v.1916 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> from telnetlib im

[issue14556] telnetlib Telnet.expect fails with timeout=0

Zackery Spytz added the comment: Python 2.7 is no longer supported, so I think this issue should be closed. -- nosy: +ZackerySpytz ___ Python tracker ___ _

[issue14556] telnetlib Telnet.expect fails with timeout=0

Joel Lovinger added the comment: 2.4 behavior, "time out if there is no more data for X seconds", only worked as expected in the case of timeout=0. Any other timeout could result in indefinite extension and needed fixing. 2.7 behavior, "time out if there is no match for X seconds" fixes timeo

[issue14556] telnetlib Telnet.expect fails with timeout=0

R. David Murray added the comment: Ah, so there are actually two timeouts of interest. One is "time out if there is no more data for X seconds", and the other is "time out if there is no match for X seconds". It used to do the former, now it does the latter. I think you get the former by ca

[issue14556] telnetlib Telnet.expect fails with timeout=0

Joel Lovinger added the comment: Quick response! Based on review of Telnet.expect in Python 2.4.3 and Python 2.7.1/2.7.3. In Python 2.4.3 the timeout is passed unmodified on each loop iteration to the underlying select to get more data for a potential match. Iteration only ends on EOF, sel

[issue14556] telnetlib Telnet.expect fails with timeout=0

R. David Murray added the comment: Can you point to the changes you think are at issue? That might help us track down why the change was made. This isn't necessarily a bug, but even if it isn't, the behavior should probably be explicitly documented. -- nosy: +jackdied, r.david.murra

[issue14556] telnetlib Telnet.expect fails with timeout=0

New submission from Joel Lovinger : In Python 2.4.3 a Telnet.expect with timeout=0 would always make at least one call to Telnet.fill_rawq if a match couldn't be found and the connection was open. In Python 2.7.1/2.7.3 Telnet.expect with timeout=0 breaks before any call to Telnet.fill_rawq if