py_ast.py 文件源码

def get_binary_op_str(bin_op_node):
    """Returns the string representation of the binary operator node (e.g. +, -,
    etc.). For some reason astor doesn't implement this???
    """

    if isinstance(bin_op_node, ast.Add):
        return "+"

    elif isinstance(bin_op_node, ast.Sub):
        return "-"

    elif isinstance(bin_op_node, ast.Mult):
        return "*"

    elif isinstance(bin_op_node, ast.Div):
        return "/"

    elif isinstance(bin_op_node, ast.Mod):
        return "%"

    elif isinstance(bin_op_node, ast.Pow):
        return "**"

    elif isinstance(bin_op_node, ast.LShift):
        return "<<"

    elif isinstance(bin_op_node, ast.RShift):
        return ">>"

    else:
        raise ValueError("No string defined for binary operator node %s" % \
            bin_op_node.__class__.__name__)