def ranfunc():
    return 'ranfunc'
Tests whether the equation is an equation of the given function class.
dataset/ETHPy150Open ipython/ipython-py3k/IPython/testing/plugin/dtexample.py/ranfunc--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/solvers/solveset.py/_is_function_class_equation