title: ParserError with panda read_csv
body: <p>I'm trying to read a txt file that as different number of columns per row. Here's the beginning of my file:</p>
  
  <pre><code>60381 6
  1 0.270 0.30 0.30 0.70 0.70
  4.988 4.988 4.988 4.988 4.988 4.988 4.988 4.988 4.988 4.988 4.988 4.988
  2 0.078 0.30 0.30 0.70 0.70
  5.387 5.312 5.338 4.463 4.675 4.275 4.238 3.562 3.175 3.925 4.950 4.762
  6 0.241 0.30 0.60 0.70 0.40
  3.700 3.200 2.738 2.325 1.250 0.975 1.175 1.950 2.488 3.613 3.987 3.950
  7 0.357 0.30 0.60 0.70 0.40
  1.212 1.125 1.050 0.950 0.663 0.488 0.425 0.512 0.637 0.900 1.112 1.188
  8 0.031 0.30 0.70 0.70 0.30
  0.225 0.213 0.200 0.175 0.200 0.213 0.375 0.887 0.975 0.512 0.262 0.262
  10 0.022 0.30 0.80 0.70 0.20
  0.712 0.700 0.738 0.550 0.513 0.688 0.613 0.600 0.850 0.812 0.800 0.775
  60382 5
  6 0.197 0.30 0.60 0.70 0.40
  3.700 3.200 2.738 2.325 1.250 0.975 1.175 1.950 2.488 3.613 3.987 3.950
  7 0.413 0.30 0.60 0.70 0.40
  1.212 1.125 1.050 0.950 0.663 0.488 0.425 0.512 0.637 0.900 1.112 1.188
  8 0.016 0.30 0.70 0.70 0.30
  0.225 0.213 0.200 0.175 0.200 0.213 0.375 0.887 0.975 0.512 0.262 0.262
  10 0.111 0.30 0.80 0.70 0.20
  0.712 0.700 0.738 0.550 0.513 0.688 0.613 0.600 0.850 0.812 0.800 0.775
  11 0.263 0.30 0.50 0.70 0.50
  1.812 1.388 1.087 0.825 0.538 0.400 0.338 0.400 0.500 0.925 0.962 1.100
  </code></pre>
  
  <p>I've tried using pandas read_csv to read it:</p>
  
  <pre><code>import pandas as pd
  data = pd.read_csv('./myfile.txt',header=None,sep='\s')
  </code></pre>
  
  <p>Which gives the following error:</p>
  
  <pre><code>ParserError: Expected 6 fields in line 3, saw 12. Error could possibly be due to quotes being ignored when a multi-char delimiter is used.
  </code></pre>
  
  <p>So my file doesn't have a multi-char delimiter or quotation marks. I've tried a solution for this I found in this forum, which suggested using:</p>
  
  <pre><code>data = pd.read_csv(open('./myfile.txt','r'), header=None,encoding='utf-8', engine='c')
  </code></pre>
  
  <p>Although this solves the error above, the array I'm presented with does not use space as a delimiter of columns, and the output has only 1 column:</p>
  
  <p><a href="https://i.stack.imgur.com/WGJv6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/WGJv6.png" alt="data output"></a></p>
  
  <p>How should I read the file in order to get a column for each value? I don't mind if there are nan values that fill the rest.</p>