Traceback (most recent call last):


 "bspline_sym.py", line 11, in <module>

basis = bspline_basis_set(1, knots, x)


 "/home/sympy/git2/sympy/sympy/functions/special/bsplines.py", line 210, in bspline_basis_set

return [bspline_basis(d, tuple(knots), i, x) for i in range(n_splines)]


 "/home/sympy/git2/sympy/sympy/functions/special/bsplines.py", line 210, in <listcomp>

return [bspline_basis(d, tuple(knots), i, x) for i in range(n_splines)]


 "/home/sympy/git2/sympy/sympy/functions/special/bsplines.py", line 166, in bspline_basis

result = _add_splines(A, b1, B, b2)


 "/home/sympy/git2/sympy/sympy/functions/special/bsplines.py", line 50, in _add_splines

elif lower_2 < lower and upper_2 <= lower:


 "/home/sympy/git2/sympy/sympy/core/relational.py", line 384, in __nonzero__

raise TypeError("cannot determine truth value of Relational")
TypeError: cannot determine truth value of Relational

Traceback (most recent call last):


 "<stdin>", line 2, in <module>
TypeError: func() takes 0 positional arguments but 1 was given
