Mercurial > cpython-lru_cache-weakref
diff Doc/tutorial/stdlib2.rst @ 57428:337ebb829b8c legacy-trunk
Fix some documentation examples involving the repr of a float.
| author | Mark Dickinson <dickinsm@gmail.com> |
|---|---|
| date | Tue, 24 Nov 2009 14:27:02 +0000 |
| parents | e05322efca85 |
| children | f7f5e1d27e06 |
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--- a/Doc/tutorial/stdlib2.rst Tue Nov 24 14:17:29 2009 +0000 +++ b/Doc/tutorial/stdlib2.rst Tue Nov 24 14:27:02 2009 +0000 @@ -362,10 +362,13 @@ becomes significant if the results are rounded to the nearest cent:: >>> from decimal import * - >>> Decimal('0.70') * Decimal('1.05') + >>> x = Decimal('0.70') * Decimal('1.05') + >>> x Decimal('0.7350') - >>> .70 * 1.05 - 0.73499999999999999 + >>> x.quantize(Decimal('0.01')) # round to nearest cent + Decimal('0.74') + >>> round(.70 * 1.05, 2) # same calculation with floats + 0.73 The :class:`Decimal` result keeps a trailing zero, automatically inferring four place significance from multiplicands with two place significance. Decimal