擅长:python、mysql、java
<p>尝试:</p>
<pre><code>import re
rx = re.compile(ur'[/\\]+', re.MULTILINE)
inFile = "input.txt"
outFile = "output.txt"
with open(inFile, 'r') as f_in:
with open(outFile,'w') as f_out:
for line in f_in:
cleanLine = re.sub(rx, '', line).strip()
if cleanLine.startswith('~') or cleanLine.endswith('~'):
continue
f_out.write(cleanLine + '\n')
</code></pre>
<p>这段代码正在从输入文件中删除<code>\ /</code>和以tilda<code>~</code>开头或结尾的行,并编写一个干净的输出文件。在</p>
<p>基于输入文本,它将发出</p>
^{pr2}$