Script to clean dirty files. It removes empty rows, rows with wrong attribute
number and non-alphanumeric characters from selected columns or the whole file.

Use:
python cleandirtyf.py ifilename

optional arguments:
  -h, --help show this help message and exit
  -c COLUMNS Add repeated values to a list

Input: a dirty cvs file
Output: a cvs file without empty rows and non-alphanumeric characters