(self, other)
return False
Return True if ``other`` is a submodule of ``self``.

        >>> from sympy.abc import x
        >>> from sympy import QQ
        >>> Q = QQ.old_poly_ring(x).free_module(2) / [(x, x)]
        >>> S = Q.submodule([1, 0])
        >>> Q.is_submodule(S)
        True
        >>> S.is_submodule(Q)
        False
Return True if ``other`` is a submodule of ``self``.
Return True if other is a submodule of self .
def is_submodule(self, other):
        """
        Return True if ``other`` is a submodule of ``self``.

        >>> from sympy.abc import x
        >>> from sympy import QQ
        >>> Q = QQ.old_poly_ring(x).free_module(2) / [(x, x)]
        >>> S = Q.submodule([1, 0])
        >>> Q.is_submodule(S)
        True
        >>> S.is_submodule(Q)
        False
        """
        if isinstance(other, QuotientModule):
            return self.killed_module == other.killed_module and \
                self.base.is_submodule(other.base)
        if isinstance(other, SubQuotientModule):
            return other.container == self
        return False
def is_submodule ( self , other ) : if isinstance ( other , QuotientModule ) : return self . killed_module == other . killed_module and self . base . is_submodule ( other . base ) if isinstance ( other , SubQuotientModule ) : return other . container == self return False