title: How to delete CRLFs on a specific line with a loop in Python
body: <p>I have a file like this:</p>
  
  <pre><code>"Headers1"|"Headers2"|"Headers3"|"Headers4"(CR LF)
  "Line1"|"Line1"|"Line1"|"Line1"(CR LF)
  "Line2"|"Line2"|"Line2"|"Line2"(CR LF)
  "Line3"|"Line3Column2 (CR LF)
  Line3Column2 (CR LF)"|"Line3 Column3 (CR LF)
  Line3 Column3"|"Line2"(CR LF)
  "Line4"|"Line4"|"Line4"|"Line4"(CR LF)
  </code></pre>
  
  <p>I want to delete the CRLF on line 3, 4 to have the line 5 on the line 4 and the line 4 on the line 3.</p>
  
  <p>BUT i don't want to delete the CRLF on line 5 otherwise my line 3 and my line 4 will be on the same line...</p>
  
  <p>Finally i want :</p>
  
  <pre><code>"Headers1"|"Headers2"|"Headers3"|"Headers4"(CR LF)
  "Line1"|"Line1"|"Line1"|"Line1"(CR LF)
  "Line2"|"Line2"|"Line2"|"Line2"(CR LF)
  "Line3"|"Line3Column2 (̶C̶R̶L̶F̶) Line3Column2 (̶C̶R̶L̶F̶) "|"Line3 Column3 (̶C̶R̶L̶F̶) Line3 Column3"|"Line3"(CR LF)
  "Line4"|"Line4"|"Line4"|"Line4"(CR LF)
  </code></pre>
  
  <p>I tried to make a loop (when i have a line with a pipe number &lt; header then i delete his CRLF and then i restart from the beginning) but it doesn't work...</p>