[C++-sig] strange error

[Stefan Seefeld]

hi there,

here is a (python) error I'v run across a couple of times
without understanding what it represents / comes from:

Traceback (most recent call last):
   File "<stdin>", line 1, in ?
TypeError: __repr__ returned non-string (type str)

It looks as if I called (implicitely at least) a string
conversion function but the __repr__ function didn't return
what it is supposed to: a string.

The most puzzling is now that I have defined a wrapper
for a C++ method 'void Foo::bar(...)', and this
error is printed when a call to 'foo' returns.
The internals of Foo::bar are not seen by python, and the
return value is void, where does a string conversion attempt
come into play here ?

Thanks,
		Stefan

PS: I even tried

r = foo.bar()
print type(r)

and then the 'print type(r)' would raise the above error...