title: How to retain the index count of dataframe from 1?
body: <pre><code>import pandas as pd
  test = {'name': ['mnop', 'abcd', 'ijkl', 'efgh'], 'value': ['dfdf', 'jkjhk', 'cndlkcn', 'njnck']}
  df = pd.DataFrame(test)
  print(df)
  </code></pre>
  <p>Above code prints data as below</p>
  <pre><code>name    value
  0  mnop     dfdf
  1  abcd    jkjhk
  2  ijkl  cndlkcn
  3  efgh    njnck
  </code></pre>
  <p>Now, I would like to sort it by name and index starting from <code>1 to 4</code> and then sequentially.
  I tried, <code>print(df.sort_values(by=['name']))</code>
  but index retains it's original association as below:</p>
  <pre><code>name    value
  1  abcd    jkjhk
  3  efgh    njnck
  2  ijkl  cndlkcn
  0  mnop     dfdf
  </code></pre>
  <p>How can this be done?</p>