title: how to use str.replace to clean every row of a column
body: <p>It's seems to be very easy task but I can't get the code works.</p>
  <p>I´m Just trying to clean tweet replies in a table and mantain only letters using the jupyter notebook on kaggle</p>
  <p>The thing is no matter what code I use, it's like nothing happens</p>
  <h1>I´m tried the following:</h1>
  <pre><code>pattern=re.compile('\[].\\n')
  dfreplies.Replies.str.replace(pattern, '',regex=True)
  </code></pre>
  <p>an example of the actual result is:</p>
  <pre><code>dfreplies.Replies
  &gt;&gt;&gt;     Replies
  0       [I need \n, [[#] a soda please]
  1       [bla bla + but nice hair, [[@],]
  2       [Great idea https://www.music.pe, follow us]
  </code></pre>
  <p>I expect</p>
  <pre><code>&gt;&gt;&gt;     Replies
  0       I need a soda please
  1       bla bla but nice hair
  2       Great idea, follow us
  </code></pre>