title: Ignore UTF-8 decoding errors in CSV
body: <p>I have a CSV file (which I have no control over). It's the result of concatenating multiple CSV files. Most of the file is UTF-8 but one of the files that went into it had fields that are encoded in what looks like Windows-1251.</p>
  
  <p>I actually only care about one of the fields which contains a URL (so it's valid ASCII/UTF-8).</p>
  
  <p>How do I ignore decoding errors in the other CSV fields if I only care about one field which I know is ASCII? Alternatively, for a more useful solution how do I change the encoding for each line of a CSV file if there's an encoding error?</p>