[issue30441] os.environ raises RuntimeError: dictionary changed size during iteration

[Antoine Pitrou]

Antoine Pitrou added the comment:

The environ class could have its own lock and then the __iter__ method could be rewritten as follows:

    def __iter__(self):
        with self._lock:
            keys = list(self._data)
        for key in keys:
            yield self.decodekey(key)

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nosy: +pitrou
versions: +Python 3.7

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<http://bugs.python.org/issue30441>
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