def __setitem__(self, key, value):
        rv = self._setitem(key, value)
        if rv is not None:
            i, j, value = rv
            self._mat[i*self.cols + j] = value
Return a list of installed Distribution objects.
dataset/ETHPy150Open sympy/sympy/sympy/matrices/dense.py/MutableDenseMatrix.__setitem__--crossover with--dataset/ETHPy150Open anzev/hedwig/build/pip/pip/utils/__init__.py/get_installed_distributions