擅长:python、mysql、java
<p>正如@BlueSheepToken所说,这只是使用<a href="https://docs.python.org/3/library/stdtypes.html#text-sequence-type-str" rel="nofollow noreferrer">^{<cd1>}</a>和正确模式的问题。看:</p>
<pre><code>Python 3.7.4 (default, Aug 12 2019, 14:45:07)
[GCC 9.1.1 20190605 (Red Hat 9.1.1-2)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> s='G^AATTCaaaaG^AATTCbbbG^AATTCccccddefffG^AATTCa'
>>> pattern='G^AATTC'
>>> s.count(pattern)
4
>>>
</code></pre>
<p>如果要计算的模式是<code>G^AATTC</code>,为什么要查找<code>GAATTC</code>?你知道吗</p>