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Subject: what is the "/" mean in __init__(self, /, *args, **kwargs) ?
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Xref: csiph.com comp.lang.python:76244

 >>> help(int.__init__)
Help on wrapper_descriptor:

__init__(self, /, *args, **kwargs)
     Initialize self.  See help(type(self)) for accurate signature.

what is the "/" mean in __init__(self, /, *args, **kwargs) ?