擅长:python、mysql、java
<blockquote>
<p><code>string.index(s, sub[, start[, end]])</code></p>
<p>Like <code>find()</code> but raise <code>ValueError</code> when the substring is not found.</p>
</blockquote>
<hr/>
<blockquote>
<p><code>string.find(s, sub[, start[, end]])</code></p>
<p>Return the lowest index in <code>s</code> where the substring <code>sub</code> is found...</p>
</blockquote>
<hr/>
<p>所以,是的,那不是你想要的。你知道吗</p>
<p>看看这个</p>
<pre><code>with open("filename") as f:
string = f.read()
print range(len(string))
for i,c in enumerate(string):
print i,c
</code></pre>
<hr/>
<pre><code>[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
0 t
1 h
2 e
3
4 b
5 o
6 y
7
8 w
9 a
10 s
11
12 g
13 o
14 o
15 d
</code></pre>