title: Use pandas to get county name using fips codes
body: <p>I have fips codes here: <a href="http://www2.census.gov/geo/docs/reference/codes/files/national_county.txt" rel="nofollow noreferrer">http://www2.census.gov/geo/docs/reference/codes/files/national_county.txt</a></p>
  
  <p>And a dataset that looks like this: </p>
  
  <pre><code>fips_state    fips_county       value
  
  1             1                 10
  1             3                 34
  1             5                 37
  1             7                 88
  1             9                 93
  </code></pre>
  
  <p>How can I get the county name of each row using the data from the link above with pandas? </p>