Better reproduction of this bug:
In [1]: from sympy import *
In [2]: inf = Float('inf')
In [3]: oo < inf
Out[3]: False
In [4]: -oo < -inf
Out[4]: -oo < -inf
In [5]: bool(-oo < -inf)
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-5-a2165769cd19> in <module>()
----> 1 bool(-oo < -inf)
/usr/local/lib/python2.7/dist-packages/sympy/core/relational.pyc 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
Now I get it on Python 2.7 as well, without that hashseed.
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