Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 1740 by Nerdbeard: prime(symbol('x')) never returns
http://code.google.com/p/sympy/issues/detail?id=1740

sympy/ntheory/generate.py, line 118, in prime() is:

     assert n > 0

if 'n' is a symbol, 'n > 0' is a symbolic expression, and so is True.

sympy/ntheory/generate.py, line 59, in extend_to_no() is:

     while len(self._list) < n:

if 'n' is a symbol, the same problem applies.  Inverting the logic of these
lines would kinda correct the problem:

    assert not (n <= 0)

    while not (len(self._list) >= n):

...but that seems at least as silly as passing a symbol in the first place.

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