Awesome, thanks that worked. I was using IronPython for ASP.net and did not
have a pointer to the standard library.
One last question though if anyone knows…is there a way to do this
sys.path.append from Global.asax? I know there is a python equivalent
global.py, but we right now have a bunch of code in global.asax and would
need to rewrite that in python if not. Or can they co-exist?
Thanks,
Adam
Adam Brand
SilverKey Technologies
*From:* users-boun...@lists.ironpython.com [mailto:
users-boun...@lists.ironpython.com] *On Behalf Of *David DiCato
*Sent:* Wednesday, June 24, 2009 9:31 PM
*To:* Discussion of IronPython
*Subject:* Re: [IronPython] Random Number Generation
Seo is correct; in order to import random, you need the CPython standard
library in sys.path. There are 3 ways to do this:
1. Run IronPython from the standard library directory (the working
directory is in sys.path by default)
2. Append the standard lib directory to sys.path for invocation of
IronPython, e.g.:
import sys
sys.path.append(r’c:\Program Files\IronPython 2.6\Lib’)
3. (Recommended) Set the environment variable IRONPYTHONPATH to point
to the standard lib directory
System.Random is implemented in terms of .NET integers, which are 32-bit.
When your script passed 9999999999, IronPython tried to represent it in 32
bits, causing an arithmetic overflow. In a pinch, you can use slightly more
complicated logic to suit your needs, e.g.:
var_utmn = randgen.Next(100000000,1000000000) * 10 +
randgen.Next(9)
But using the CPython library is much cleaner J.
A final word of advice: Both standard libraries’ random number generators
use the convention that the first argument is inclusive and the second is
exclusive. This means that your code will generate random numbers from
1000000000 to 9999999998, which may or may not be what you want.
Good luck,
- David
*From:* users-boun...@lists.ironpython.com [mailto:
users-boun...@lists.ironpython.com] *On Behalf Of *Adam Brand
*Sent:* Wednesday, June 24, 2009 5:22 PM
*To:* Discussion of IronPython
*Subject:* [IronPython] Random Number Generation
I feel newbish writing this, but I’m having problems generating random
numbers in IronPython.
I tried “import random” but that doesn’t seem to work (module not found).
I tried creating a System.Random but when I run
var_utmn = randgen.Next(1000000000,9999999999) I get a buffer overflow.
Any ideas? The random number needs to be above those two numbers indicated
above.
Thanks,
Adam
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