The fix for this is pretty simple. It's going into 2.1 as we speak, and I'll port it back to the 2.0.x branch. Unfortunately at this point I don't think it'll make it into 2.0 final.
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Glenn Jones Sent: Tuesday, December 09, 2008 8:37 AM To: Discussion of IronPython Subject: [IronPython] subclasses of list with __mul__ defined Hi guys, Another issue from our upgrade to IPy2: class thing(list): def __init__(self, value): self.value = value def __mul__(self, other): return self.value * other t1 = thing(3.0) print t1 * 3.0 results in: Traceback (most recent call last): File "testmat.py", line 12, in testmat.py File "Microsoft.Scripting.Core", line unknown, in New File "Microsoft.Scripting.Core", line unknown, in New File "Microsoft.Scripting.Core", line unknown, in ValidateArgumentTypes ValueError: Expression of type 'System.Double' cannot be used for constructor parameter of type 'System.Object' This has the potential to cause us significant pain since a third-party (pure python) library that we use relies on this behaving correctly. We'll raise this as a bug on codeplex. Thanks Glenn & Tom
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