How to finish sys.stdin.readlines() input?

╰+攻爆jí腚メ 2022-07-15 04:23 144阅读 0赞

import re  
import sys  
\#qqq.txt  
'''111 222qq  
3a  
eee  
'''  
for name in sys.stdin.readlines():   
  items = re.findall("\\d+", name)   
  if(len(items)>0):   
    print items  
'''  
C:\\Python27>.\\listFileNum.py < qqq.txt  
\['111', '222'\]  
\['3'\]

C:\\Python27>.\\listFileNum.py < qqq.txt >ooo.txt  
C:\\Python27>type ooo.txt  
\['111', '222'\]  
\['3'\]

C:\\Python27>.\\listFileNum.py  
111 222qq  
3a  
eee  
^Z  
\['111', '222'\]  
\['3'\]  
'''

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      <p>This might be a silly question, but as I can't find an answer, I have to ask it.</p> 
      <p>In interactive python I want to process a message which i get with:</p> 
      <pre><code><span>&gt;&gt;&gt;</span><span> message </span><span>=</span><span> sys</span><span>.</span><span>stdin</span><span>.</span><span>readlines</span><span>()</span></code></pre> 
      <p>Everything works fine, but... how to stop it from getting an input and make it save into message variable? Stopping with ctrl+c stops whole process so there is no input to be saved anywhere. I guess there's an easy answer I just can't find...</p> 
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      <a title="show questions tagged 'python'" href="http://stackoverflow.com/questions/tagged/python" rel="nofollow">python</a> 
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      <a title="show questions tagged 'sys'" href="http://stackoverflow.com/questions/tagged/sys" rel="nofollow"> sys</a> 
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           <span title="2011-04-05 08:26:36Z"> Apr 5 '11 at 8:26</span> 
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## 3 Answers 3 ##

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     <a title="This answer is useful" rel="nofollow"> up vote</a> 
     <span>29</span> 
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     <span title="loading when this answer was accepted...">accepted</span> 
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     <p><strong>For unix based system :</strong></p> 
     <p>Hello, you can tape : Ctrld</p> 
     <p>Ctrld closes the standard input (stdin) by sending <a href="http://en.wikipedia.org/wiki/End-of-file" rel="nofollow"> EOF</a>. </p> 
     <p>Example :</p> 
     <pre><code><span>&gt;&gt;&gt;</span><span> </span><span>import</span><span> sys </span><span>&gt;&gt;&gt;</span><span> message </span><span>=</span><span> sys</span><span>.</span><span>stdin</span><span>.</span><span>readlines</span><span>()</span><span> </span><span>Hello</span><span> </span><span>World</span><span> </span><span>My</span><span> </span><span>Name</span><span> </span><span>Is</span><span> </span><span>James</span><span> </span><span>Bond</span><span> </span><span># &lt;ctrl-d&gt; EOF sent</span><span> </span><span>&gt;&gt;&gt;</span><span> </span><span>print</span><span> message </span><span>[</span><span>'Hello\n'</span><span>,</span><span> </span><span>'World\n'</span><span>,</span><span> </span><span>'My\n'</span><span>,</span><span> </span><span>'Name\n'</span><span>,</span><span> </span><span>'Is\n'</span><span>,</span><span> </span><span>'James\n'</span><span>,</span><span> </span><span>'Bond\n'</span><span>]</span></code></pre> 
     <p><strong>For Windows :</strong></p> 
     <p>To send EOF on Windows, you can replace Ctrld by Ctrlz</p> 
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          <a title="show all edits to this post" href="http://stackoverflow.com/posts/5549182/revisions" rel="nofollow">edited <span title="2011-04-05 08:41:54Z">Apr 5 '11 at 8:41</span></a> 
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           answered 
          <span title="2011-04-05 08:30:29Z"> Apr 5 '11 at 8:30</span> 
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          <span>Thank a lot - exactly what I was looking for. As both of you answered in the same time, I'll upvote both of yours answers.</span> –&nbsp; 
          <a title="1,777 reputation" href="http://stackoverflow.com/users/581732/gandi" rel="nofollow">Gandi</a> 
          <span><a href="http://stackoverflow.com/questions/5549141/how-to-finish-sys-stdin-readlines-input#comment6308687_5549182" rel="nofollow"><span title="2011-04-05 08:38:53Z">Apr 5 '11 at 8:38</span></a></span> 
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          <span>You're welcome.</span> –&nbsp; 
          <a title="19,130 reputation" href="http://stackoverflow.com/users/259576/sandro-munda" rel="nofollow">Sandro Munda</a> 
          <span><a href="http://stackoverflow.com/questions/5549141/how-to-finish-sys-stdin-readlines-input#comment6308749_5549182" rel="nofollow"><span title="2011-04-05 08:42:56Z">Apr 5 '11 at 8:42</span></a></span> 
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     <p>Use <code>CTRL-D</code>.</p> 
     <pre><code><span>message </span><span>=</span><span> sys</span><span>.</span><span>stdin</span><span>.</span><span>readlines</span><span>()</span><span> abc </span><span>def</span><span> </span><span>&lt;</span><span>CTRL</span><span>-</span><span>D</span><span>&gt;</span><span> </span><span># message == ['abc\n', 'def\n']</span></code></pre> 
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          <span title="2011-04-05 08:30:20Z"> Apr 5 '11 at 8:30</span> 
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     <p>This is an old question but it needs an update about <strong>Windows and different keyboard layouts.</strong> </p> 
     <p>If neither <strong>CTRL + Z</strong> nor <strong>CTRL + D ** work for you on Windows</strong> and and you're wandering what is going on do this: </p> 
     <ul> 
      <li>check if you are using <strong>default english keyboard layout</strong></li> 
      <li>if you do have different, non-default keyboard layout try switching keyboard setting to English in language bar, then try pressing ctrl + z after changes</li> 
      <li>if you're still confused look at the screen, what appears in command line when you press ctrl + z. What symbol do you see? When I was pressing ctrl + z I was seeing this: ^Y, and when by mistake I pressed ctrl + y I've seen this ^Z, i pressed enter and the input was taken, EOF sent. </li> 
     </ul> 
     <p>This is somewhat strange and counterintuitive. I changed keys layout some time ago to include polish characters, but all the common keys are left unchanged, z still maps to z when I use the keyboard normally, normally ctrl + z does nothing in my keyboard, so I shouldn't be changed. But apparently in cmd it works differently, in order to have default link between ctrl and z I have to switch to default layout, or use control y to sent EOF. </p> 
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          <span title="2013-07-29 12:52:53Z"> Jul 29 '13 at 12:52</span> 
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          <span>Holy crap, you saved me. I had no clue what I was doing wrong and I finally found your answer where you say <code>i pressed enter</code> and I suddenly knew what I was doing wrong. Thanks!</span> –&nbsp; 
          <a title="600 reputation" href="http://stackoverflow.com/users/1394698/snowe2010" rel="nofollow">snowe2010</a> 
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