title: How to remove substring from string in pandas column that contain both numbers and chars
body: <p>I know that if we have strings like this</p>
  <pre><code>May21
  James
  Adi22
  Hello
  Girl90
  zt411
  </code></pre>
  <p>We can use regex with <code>\d+</code> to remove all the numbers. But how would I also remove the entire string if the string also contains characters. Thus the only thing that would be returned in the latter above would be James and Hello?</p>
  <p>I can do this for just one string:</p>
  <pre><code>c = 'xterm has been replaced new mac 008064c79202'
  c = ' '.join(w for w in c.split() if not any(x.isdigit() for x in w))
  c
  </code></pre>
  <p>How would I apply this across an entire dataframe?</p>