Python的Telnetlib read_until'＃'或'＆GT;'，多发串的决心？ [英] Python Telnetlib read_until '#' or '>', mutiple string determination?

问题描述

if (tn.read_until('>')):
    action1
else:
    action2

或

if (tn.read_until() == '>'):
    action1
else:
    action2

我只想 read_until（）来检查哪些所需的字符串是第一位的，并做不同的动作。
或者是有任何等价的方法？

I just want the read_until() to check which desired String comes first, and do different actions. Or is there any equivalent ways?

推荐答案

看的文档。阅读，直到希望的有望的字符串作为位置参数和一个可选的超时。我会做这样的：

Look at the docs. Read until wants the expected string as a positional argument and an optional timeout. I would do it like this:

>>> try:
...     response = tn.read_until(">", timeout=120) #or whatever timeout you choose.
... except EOFError as e:
...     print "Connection closed: %s" % e

>>> if ">" in response:
...    action1
... else:
...    action2

如果你愿意，你可以使用多个不同的字符 read_some（）

If you want multiple different characters you can use read_some()

>>> while True: #really you should set some sort of a timeout here.
...    r = tn.read_some()
...    if any(x in r for x in ["#", ">"]):
...        break

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