S. Chris Colbert schrieb:
This seems strange to me, but perhaps I am just missing something:
In [12]: t = 0.
In [13]: time = 10.
In [14]: while t < time:
....: print t
....: t += 1.
....:
....:
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
In [15]: t = 0.
In [16]: time = 10.
In [17]: while t < time:
....: print t
....: t += 0.1
....:
....:
0.0
0.1
0.2
0.3
<--snip-->
9.4
9.5
9.6
9.7
9.8
9.9
10.0
I would think that second loop should terminate at 9.9, no?
I am missing something fundamental?
Yes. The lack of precision that floating points suffer from (nothing
python-specific), and the rounding-behavior of printing them.
>>> t = 0.
>>> time = 10.
>>> while t < time:
... print repr(t)
... t += .1
...
0.0
0.10000000000000001
<snip/>
9.8999999999999808
9.9999999999999805
>>>
Diez
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