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Date: Fri, 11 Apr 2014 07:02:33 +0800
Subject: the logical operation confused me
From: length power <elearn2014@gmail.com>
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>>> "ok" or "not ok"
'ok'
>>> "ok" and "not ok"
'not ok'
>>>

why "ok" or "not ok" output "ok"  , "ok" and "not ok"  output "not ok" ?

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<div dir=3D"ltr"><div>&gt;&gt;&gt; &quot;ok&quot; or &quot;not ok&quot;<br>=
&#39;ok&#39;<br>&gt;&gt;&gt; &quot;ok&quot; and &quot;not ok&quot;<br>&#39;=
not ok&#39;<br>&gt;&gt;&gt;<br><br></div>why  &quot;ok&quot; or &quot;not o=
k&quot; output &quot;ok&quot;=A0 , &quot;ok&quot; and &quot;not ok&quot;=A0=
 output &quot;not ok&quot; ?<br>
<div><br></div></div>

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