Hey,
I am trying to use the stats module to calculate probabilities for a normal
distributed RV.
Problem is, I sometimes get "TypeError: cannot determine truth value of -oo
< -inf".
Weird thing is, the error is not always reproducible between (ipython)
sessions (see below)
Can somebody explai
On Thursday, March 19, 2015 at 6:02:46 PM UTC+1, Joachim Durchholz wrote:
>
>
> One cause of random behaviour is built right into Python.
> Set the environment variable PYTHONHASHSEED to an integer when starting
> SymPy, and this source of randomness is eliminated and you'll get
> repeatable b
kages/sympy/core/relational.py in
__nonzero__(self)
101
102 def __nonzero__(self):
--> 103 raise TypeError("cannot determine truth value of\n%s" %
self)
104
105 __bool__ = __nonzero__
TypeError: cannot determine truth value of
-oo < -inf
On Tue, M
On Tue, Mar 24, 2015 at 1:13 PM, Francesco Bonazzi
wrote:
>
> Try this:
>
> res = P(N0 <= 1.1001, evaluate=Fales)
> res.doit()
>
> and see whether the exception is raised by the first or the second step.
>
It is raised by the first step.
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This fixes it for me:
https://github.com/sympy/sympy/pull/9199
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