[issue25205] setattr accepts invalid identifiers

[W deW]

New submission from W deW:

An identifier is defined by 

identifier ::=  (letter|"_") (letter | digit | "_")*

setattr accepts identifiers that do not meet this criterion:

<pre>
Python 2.7.8 (default, Jun 30 2014, 16:08:48) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> class C(object): pass
...
>>> o=C()
>>> setattr(o, "$$$", True)
>>>  dir(o)
['$$$', '__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__in
module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__su
__', '__weakref__']
>>> o.$$$
  File "<stdin>", line 1
    o.$$$
      ^
SyntaxError: invalid syntax
>>>
</pre>

----------
components: Interpreter Core
messages: 251248
nosy: W deW
priority: normal
severity: normal
status: open
title: setattr accepts invalid identifiers
type: behavior
versions: Python 2.7

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25205>
_______________________________________