Traceback (most recent call last):


 "<stdin>", line 1, in <module>
ValueError: unable to broadcast argument 1 to output array

Traceback (most recent call last):


 "numexpr/tests/test_numexpr.py", line 1011, in method

return func()


 "numexpr/tests/test_numexpr.py", line 572, in method

npval = eval(expr, globals(), this_locals)


 "<string>", line 1, in <module>
ValueError: Integers to negative integer powers are not allowed.
