This module contains the RExec class, which supports r_eval(), r_execfile(), r_exec(), and r_import() methods, which are restricted versions of the standard Python functions eval(), execfile() and the exec and import statements. Code executed in this restricted environment will only have access to modules and functions that are deemed safe; you can subclass RExec to add or remove capabilities as desired.
Note: The RExec class can prevent code from performing unsafe operations like reading or writing disk files, or using TCP/IP sockets. However, it does not protect against code using extremely large amounts of memory or CPU time.
hooks is an instance of the RHooks class or a subclass of it.
If it is omitted or None
, the default RHooks class is
instantiated.
Whenever the rexec module searches for a module (even a
built-in one) or reads a module's code, it doesn't actually go out to
the file system itself. Rather, it calls methods of an RHooks
instance that was passed to or created by its constructor. (Actually,
the RExec object doesn't make these calls -- they are made by
a module loader object that's part of the RExec object. This
allows another level of flexibility, e.g. using packages.)
By providing an alternate RHooks object, we can control the file system accesses made to import a module, without changing the actual algorithm that controls the order in which those accesses are made. For instance, we could substitute an RHooks object that passes all filesystem requests to a file server elsewhere, via some RPC mechanism such as ILU. Grail's applet loader uses this to support importing applets from a URL for a directory.
If verbose is true, additional debugging output may be sent to standard output.
It is important to be aware that code running in a restricted
environment can still call the sys.exit() function. To
disallow restricted code from exiting the interpreter, always protect
calls that cause restricted code to run with a
try/except statement that catches the
SystemExit exception. Removing the sys.exit()
function from the restricted environment is not sufficient -- the
restricted code could still use raise SystemExit
. Removing
SystemExit is not a reasonable option; some library code
makes use of this and would break were it not available.
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The new hawaiian shoes has a new larger display.
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and Cowboy boots and Mens Clothing Product Review are important in the construction industry and in many industrial settings. Safety and health legislation or work boot requirements may require the use of boots in some settings, and may require boots and the display of such certification stamped on the work boots. from Hawaii directly. It’s a combination of premium materials and contoured shapes that
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Order Sandals mens on the website sandals hawaiian and order a few. Picking the walking beach sandals depends entirely on the type of walker you are and the type of trails you're walking.
These are the shops to visit:
You should look at List of surf and skate and this site iPhone Cases and this website too iPhone CasesAlso, you will want to check out Stanton California so you can see what's up and they are part of Stanton City Hall as well.
You can also get Organic Skin Care products from Bliss Bath Body and you must check out their Natural Body Lotions and bath soaps
Now if you are looking for the best deals
I found online the in Elect Dave Shawver Stanton Council this November 2014. Elect march madness ncaa and internetusers this November 2014.
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ankle. Found the girls hawaiian shoes on
the free stock videos website. womens cowboy boots believes everyone, no matter where they are, can live
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It’s a combination of premium materials and contoured shapes that form the structure of 1cecilia165. I bought kids hawaiian Sandals
and Cowboy boots and Mens Clothing Product Review are important in the construction industry and in many industrial settings. Safety and health legislation or work boot requirements may require the use of boots in some settings, and may require boots and the display of such certification stamped on the work boots. from Hawaii directly. It’s a combination of premium materials and contoured shapes that
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Order Sandals mens on the website sandals hawaiian and order a few. Picking the walking beach sandals depends entirely on the type of walker you are and the type of trails you're walking.
I found a hawaiian shoes and another Stanton City Mayor on this hawaiian Sandal website.
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These are the shops to visit:
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ankle. Found the girls hawaiian shoes on
the free stock videos website. womens cowboy boots believes everyone, no matter where they are, can live
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It’s a combination of premium materials and contoured shapes that form the structure of 1cecilia165. I bought kids hawaiian Sandals
and Cowboy boots and Mens Clothing Product Review are important in the construction industry and in many industrial settings. Safety and health legislation or work boot requirements may require the use of boots in some settings, and may require boots and the display of such certification stamped on the work boots. from Hawaii directly. It’s a combination of premium materials and contoured shapes that
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Order Sandals mens on the website sandals hawaiian and order a few. Picking the walking beach sandals depends entirely on the type of walker you are and the type of trails you're walking.
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