Skip Montanaro wrote:
> Are float("inf") and float("nan") supported everywhere?
nope.
>>> float("inf")
Traceback (most recent call last):
File "<stdin>", line 1, in ?
ValueError: invalid literal for float(): inf
>>> float("nan")
Traceback (most recent call last):
File "<stdin>", line 1, in ?
ValueError: invalid literal for float(): nan
>>> 1e10000
1.#INF
>>> float("1.#INF")
Traceback (most recent call last):
File "<stdin>", line 1, in ?
ValueError: invalid literal for float(): 1.#INF
> As a starting point can it be agreed on whether they should be supported?
that would be nice.
> In either case, we should then know how to fix marshal.loads (and probably
> pickle.loads).
pickle doesn't have the INF=>1.0 bug:
>>> import pickle
>>> pickle.loads(pickle.dumps(1e10000))
...
ValueError: invalid literal for float(): 1.#INF
>>> import cPickle
>>> cPickle.loads(cPickle.dumps(1e10000))
...
ValueError: could not convert string to float
>>> import marshal
>>> marshal.loads(marshal.dumps(1e10000))
1.0
</F>
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