擅长:python、mysql、java
<p>试一试</p>
<pre><code>with open('source.txt') as f:
for line in f:
new_line = ' '.join(filter(lambda s: s.isalpha() , l.split(' ')))
print(new_line)
</code></pre>
<p>代码对于空格的数量是合理的</p>
<p>用正则表达式</p>
<pre><code>import regex
with open('source.txt', 'r') as f:
text = re.sub(r'[0-9|,|\.|\(|\)|\$|\s]+\n', '\n', f.read()+'\n', re.M)
</code></pre>