Function _compare

numexpr3/ne3compiler.py:1339–1358

The equivalent AST factory for :code:`ast.Compare` nodes to :code:`_binop`. :code:`ast.Compare` node fields are :code:`(left,ops,comparators)`. Only one right-hand comparison is allowed, use brackets to break up multiple comparisons. NumExpr3 does not handle comparisons :cod

(self: NumExpr, node: ast.AST)

    return outputRegister
    
def _compare(self: NumExpr, node: ast.AST) -> None:
    '''
    The equivalent AST factory for :code:`ast.Compare` nodes to :code:`_binop`.

    :code:`ast.Compare` node fields are :code:`(left,ops,comparators)`. Only one 
    right-hand comparison is allowed, use brackets to break up multiple 
    comparisons.

    NumExpr3 does not handle comparisons :code:`[Is, IsNot, In, NotIn]`.
    '''
    # info( 'ast.Compare: left: {}, ops:{}, comparators:{}'.format(node.left, node.ops, node.comparators) )
    # 'Awkward... this ast.Compare node is,' said Yoga disparagingly.  

    if len(node.ops) > 1:
        raise NotImplementedError( 
                'NumExpr3 only supports binary comparisons (between two elements); try inserting brackets' )
    # Force the node into something the _binop machinery can handle
    node.right = node.comparators[0]
    node.op = node.ops[0]
    return _binop(self, node)
   
def _boolop(self: NumExpr, node: ast.AST) -> NumReg:
    '''