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    <p>It looks like there are some problems with that code, Johannes:</p> <ul> <li><code>getTerminalSize</code> needs to <code>import os</code></li> <li>what is <code>env</code>? looks like <code>os.environ</code>.</li> </ul> <p>Also, why switch <code>lines</code> and <code>cols</code> before returning? If <code>TIOCGWINSZ</code> and <code>stty</code> both say <code>lines</code> then <code>cols</code>, I say leave it that way. This confused me for a good 10 minutes before I noticed the inconsistency.</p> <p>Sridhar, I didn't get that error when I piped output. I'm pretty sure it's being caught properly in the try-except.</p> <p>pascal, <code>"HHHH"</code> doesn't work on my machine, but <code>"hh"</code> does. I had trouble finding documentation for that function. It looks like it's platform dependent.</p> <p>chochem, incorporated.</p> <p>Here's my version:</p> <pre><code>def getTerminalSize(): """ returns (lines:int, cols:int) """ import os, struct def ioctl_GWINSZ(fd): import fcntl, termios return struct.unpack("hh", fcntl.ioctl(fd, termios.TIOCGWINSZ, "1234")) # try stdin, stdout, stderr for fd in (0, 1, 2): try: return ioctl_GWINSZ(fd) except: pass # try os.ctermid() try: fd = os.open(os.ctermid(), os.O_RDONLY) try: return ioctl_GWINSZ(fd) finally: os.close(fd) except: pass # try `stty size` try: return tuple(int(x) for x in os.popen("stty size", "r").read().split()) except: pass # try environment variables try: return tuple(int(os.getenv(var)) for var in ("LINES", "COLUMNS")) except: pass # i give up. return default. return (25, 80) </code></pre>
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    1. COI was wandering about the `env` too, and it is indeed `env = os.environ`, from [accepted answer](http://stackoverflow.com/a/566752/277826).
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