Re: Disable certain modules

This works for me on 2.5.3, but I'm not using PyScriptEngine.  I use PythonInterpreter directly.  Does your 'from' import work
without intercepting __import__?   Does it work with a trivial 'myImport' as below?

 >>>  import __builtin__
 >>>  oldImport = __builtin__.__import__
 >>>  def myImport(*args):
...    return oldImport(*args)
...
 >>>  __builtin__.__import__=myImport
 >>>  import uuid
 >>>  from email.mime.image import MIMEImage
 >>>  from email.mime.multipart import MIMEMultipart
 >>>
 >>>  print MIMEImage
email.mime.image.MIMEImage
 >>>  print MIMEMultipart
email.mime.multipart.MIMEMultipart
 >>>
 >>>  import sys
 >>>  print sys.version
2.5.3 (2.5:c56500f08d34+, Aug 13 2012, 14:48:36)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)]
 >>>


On 2/12/2015 1:11 PM, Pradeep Badiger wrote:
>
> I was trying import using "from" syntax and this logic doesn't seem to work. I mean I get import error from oldImport module.
>
> from email.mime.image import MIMEImage
>
> from email.mime.multipart import MIMEMultipart
>
> Exception in thread "main" _javax.script.ScriptException_: ImportError: cannot import name MIMEImage in <script> at line number 122
>
> at org.python.jsr223.PyScriptEngine.scriptException(_PyScriptEngine.java:202_)
>
> at org.python.jsr223.PyScriptEngine.eval(_PyScriptEngine.java:42_)
>
> at org.python.jsr223.PyScriptEngine.eval(_PyScriptEngine.java:31_)
>
> Thanks,
>
> Pradeep V.B.
>
> *From:*Pradeep Badiger
> *Sent:* Thursday, February 12, 2015 2:21 PM
> *To:* 'Jeff Emanuel'; [email protected]
> *Subject:* RE: [Jython-dev] Disable certain modules
>
> Interesting.. I will see if this fits my requirements.
>
> Thanks,
>
> Pradeep V.B.
>
> *From:*Jeff Emanuel [mailto:[email protected]]
> *Sent:* Thursday, February 12, 2015 1:53 PM
> *To:* [email protected] <mailto:[email protected]>; Pradeep Badiger
> *Subject:* Re: [Jython-dev] Disable certain modules
>
> I don't know that this is fool-proof, but you can replace __builtin__.__import__ with your own implementation that checks the module name.
>
> >>> import __builtin__
> >>> oldImport = __builtin__.__import__
> >>> def myImport(*args):
> ...   if args[0]=='symbol':  # Disallowing symbol module
> ...     raise ImportError("Import denied")
> ...   return oldImport(*args)
> ...
> >>> __builtin__.__import__=myImport
> >>> import symbol  # fails
> Traceback (most recent call last):
>   File "<input>", line 1, in <module>
>   File "<input>", line 3, in myImport
> ImportError: Import denied
> >>> import traceback # works
> >>>
>
> On 2/12/2015 8:37 AM, Pradeep Badiger wrote:
>
>     Hi,
>
>     I am trying to disable certain modules which I don't want my users to use. How can I do that?
>
>     I tried del function to delete the module programmatically. But this doesn't work if you import the module again.
>
>     Can someone provide me the pointers?
>
>     Thanks,
>
>     Pradeep V.B.
>
>
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