astTools.py 文件源码

def doCompare(op, left, right):
    """Perform the given AST comparison on the values"""
    top = type(op)
    if top == ast.Eq:
        return left == right
    elif top == ast.NotEq:
        return left != right
    elif top == ast.Lt:
        return left < right
    elif top == ast.LtE:
        return left <= right
    elif top == ast.Gt:
        return left > right
    elif top == ast.GtE:
        return left >= right
    elif top == ast.Is:
        return left is right
    elif top == ast.IsNot:
        return left is not right
    elif top == ast.In:
        return left in right
    elif top == ast.NotIn:
        return left not in right