Possible bug with TypeError in Python

[Aaron Konstam]

The following seems like an bug in python in both f7 and f8 but I would
like input before I post a bugzilla. It seems the exception handler
cannot trap the TypeError in python.
For example:
def plus(a,b):
	try:
		return(a+b)
	except TypeError:
		return None

If we define plus as above and call it with: plus(3,) we should get
nothing returned. Instead we get:
Traceback (most recent call last):
  File "./calculator", line 47, in <module>
    exec("register=op[tokens[0]](register)")
  File "<string>", line 1, in <module>
TypeError: plus() takes exactly 2 arguments (1 given)

This seems like a bug. An ideas out there?
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Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam at sbcglobal.net