csvstat chokes on "inf" numbers

Created by: rslemos

For the following input CSV (yes, 1 row, 1 column, 1 header):

headerA
inf

csvstat (no other argument besides input.csv) outputs:

  1. "columnA"

	Type of data:          Number
	Contains null values:  False
	Unique values:         1
	Most common values:    [<class 'decimal.InvalidOperation'>]

This happens because python-babel (in Debian system 2.4.0) number formatting function chokes on Infinity, e.g.:

from decimal import Decimal
from babel.numbers import format_decimal
format_decimal(Decimal("Infinity"))

format_decimal is called from csvstat.py:269 (in Debian system 1.0.2-1).

Interestingly csvstat --freq outputs:

{ "Infinity": 1 }