Describe a CSV dialect.
This must be subclassed (see csv.excel). Valid attributes are:
delimiter, quotechar, escapechar, doublequote, skipinitialspace,
lineterminator, quoting.
A one-character string used to quote fields containing special characters, such as the delimiter or the quotechar, or which contain new-line characters ('\r', '\n' or any of the characters in lineter…