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1 | - | #!/usr/bin/env python |
1 | + | #!/usr/bin/env python |
2 | - | |
2 | + | |
3 | - | # credit for this goes to the author |
3 | + | # credit for this goes to the author |
4 | - | # of The Python Standard Library by example |
4 | + | # of The Python Standard Library by example |
5 | - | # Jesse Noller, Python Core Developer and PSF Board Member |
5 | + | # Jesse Noller, Python Core Developer and PSF Board Member |
6 | - | # Book can be purchased on amazon, it is also |
6 | + | # Book can be purchased on amazon, it is also |
7 | - | # on the oreilly bookshelf and may be at your |
7 | + | # on the oreilly bookshelf and may be at your |
8 | - | # library. I'm only reprinting the code example |
8 | + | # library. I'm only reprinting the code example |
9 | - | # here because I'm working on this stuff as a |
9 | + | # here because I'm working on this stuff as a |
10 | - | # student of the Python Programming language. |
10 | + | # student of the Python Programming language. |
11 | - | # Thanks Jesse Noller for such a good book. |
11 | + | # Thanks Jesse Noller for such a good book. |
12 | - | |
12 | + | |
13 | - | import decimal |
13 | + | import decimal |
14 | - | |
14 | + | |
15 | - | for value in ['Infinity', 'NaN', '0']: |
15 | + | for value in ['Infinity', 'NaN', '0']: |
16 | - | print decimal.Decimal(value), decimal.Deciamal('-' + value) |
16 | + | print decimal.Decimal(value), decimal.Decimal('-' + value) |
17 | - | |
17 | + | |
18 | - | |
18 | + | |
19 | - | # Math with infinity |
19 | + | # Math with infinity |
20 | - | print 'Infinity + 1:', (decimal.Decimal('Infinity') + 1) |
20 | + | print 'Infinity + 1:', (decimal.Decimal('Infinity') + 1) |
21 | - | print '-Infinity + 1:', (decimal.Decimal('-Infinity') + 1) |
21 | + | print '-Infinity + 1:', (decimal.Decimal('-Infinity') + 1) |
22 | - | |
22 | + | |
23 | - | # Print comparing NaN |
23 | + | # Print comparing NaN |
24 | - | print decimal.Decimal('NaN') == decimal.Decimal('Infinity') |
24 | + | print decimal.Decimal('NaN') == decimal.Decimal('Infinity') |
25 | print decimal.Decimal('NaN') != decimal.Decimal(1) |