decimal_special.py

#!/usr/bin/env python

# credit for this goes to the author
# of The Python Standard Library by example
# Jesse Noller, Python Core Developer and PSF Board Member
# Book can be purchased on amazon, it is also
# on the oreilly bookshelf and may be at your
# library. I'm only reprinting the code example
# here because I'm working on this stuff as a
# student of the Python Programming language.
# Thanks Jesse Noller for such a good book.

import decimal

for value in ['Infinity', 'NaN', '0']:
    print decimal.Decimal(value), decimal.Deciamal('-' + value)
print

# Math with infinity
print 'Infinity + 1:', (decimal.Decimal('Infinity') + 1)
print '-Infinity + 1:', (decimal.Decimal('-Infinity') + 1)

# Print comparing NaN
print decimal.Decimal('NaN') == decimal.Decimal('Infinity')
print decimal.Decimal('NaN') != decimal.Decimal(1)