Pandas read_csv parsing error if lines contains variable fields
I am using pandas version 0.14.0 and try to parse a csv file which variable number of tokens (fields) using read_csv(). While parsing, I got the below error. 

  File "parser.pyx", line 727, in pandas.parser.TextReader.read (pandas\parser.c:7146)
  File "parser.pyx", line 749, in pandas.parser.TextReader._read_low_memory (pandas\parser.c:7370)
  File "parser.pyx", line 802, in pandas.parser.TextReader._read_rows (pandas\parser.c:7979)
  File "parser.pyx", line 789, in pandas.parser.TextReader._tokenize_rows (pandas\parser.c:7853)
  File "parser.pyx", line 1697, in pandas.parser.raise_parser_error (pandas\parser.c:19604)
CParserError: Error tokenizing data. C error: Expected 4 fields in line 2, saw 5

The file contains the below rows.
1,2,3,4
3,4,5,6,7
3,4,5

Kindly help to provide the solution to read this kind of files.

Thanks and regards
KB Devaraj
