擅长:python、mysql、java
<p>是的,这是正确的行为。从<a href="http://docs.python.org/library/stdtypes.html#sequence-types-str-unicode-list-tuple-bytearray-buffer-xrange" rel="nofollow">^{<cd1>}</a>:</p>
<blockquote>
<p>The slice of s from i to j is defined as the sequence of items with
index k such that i <= k < j.</p>
</blockquote>