擅长:python、mysql、java
<pre><code>with open("input.csv", "r") as inp, open("output","w") as out:
inpList = inp.read().split()
out.write('\n'.join(el for el in inpList if ';cr;' in el))
</code></pre>
<p>如果要从web上读取数据,请使用以下方法:</p>
^{pr2}$
<p><code>read()</code>一次读取整个文件。<code>split()</code>将其拆分为一个由空格分隔的列表。在</p>
<pre>read(...)
read([size]) -> read at most size bytes, returned as a string.
If the size argument is negative or omitted, read until EOF is reached.</pre>
<p>为了写入文件,<code>'\n'.join([elem1,...])</code>从包含“;cr;”的所有inpList元素创建一个字符串。此字符串被传递到<code>write(str)</code>,后者将字符串打印到输出文件。在</p>