[issue1986] io.StringIO allows any parameter

[Christian Heimes]

Christian Heimes added the comment:

In Python 2.x StringIO.StringIO calls str() on its arguments:

>>> StringIO.StringIO(1).read()
'1'
>>> StringIO.StringIO(object).read()
"<type 'object'>"
>>> str(object)
"<type 'object'>"

io.StringIO has the same behavior:
>>> io.StringIO(1).read()
'1'
>>> io.StringIO(object).read()
"<type 'object'>"

Georg, what's the bug here?

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nosy: +tiran

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