python.py 文件源码

def _make_list_func(tree, field_names_dict, filename=None, add_args=None):
    filename = filename or '<generated>'
    list_name = 'data'

    rewriter = RewriteName(list_name, field_names_dict)

    lambda_args = [ast.Name(id=list_name, ctx=ast.Param(), lineno=0, col_offset=0)]
    for arg in (add_args or []):
        lambda_args.append(
            ast.Name(id=arg, ctx=ast.Param(), lineno=0, col_offset=0)
        )

    tree = rewriter.visit(tree)
    tree = ast.Expression(
        body = ast.Lambda(
            lineno = 0,
            col_offset = 0,
            body = tree.body,
            args = ast.arguments(
                args = lambda_args,
                vararg = None,
                kwarg = None,
                defaults = [],
            )
        ),
    )
    code = compile(tree, filename, 'eval')
    func = eval(code)
    return func