Dan Moskowitz danielm at cronus.res.cmu.edu
Thu Mar 28 14:51:23 EST 2002

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Can someone tell me why execing "open" works, but not "len"?

>>> from rexec import RExec
>>>
>>> class MyRExec(RExec):
...     nok_builtin_names = RExec.nok_builtin_names + ("len",)
...
>>> r = MyRExec()
>>> print 'invisible names: '+`r.nok_builtin_names`
invisible names: ('open', 'reload', '__import__', 'len')
>>> r.r_exec('open')
>>> r.r_exec("len('foo')")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/local/depot/python2/lib/python2.1/rexec.py", line 264, in r_exec
    exec code in m.__dict__
  File "<string>", line 1, in ?
NameError: name 'len' is not defined

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