[issue37402] Fatal Python error: Cannot recover from stack overflow issues on Python 3.6 and 3.7

[hongweipeng]

hongweipeng <hongweichen8888 at sina.com> added the comment:

According to the provided text.py file. `__exit__` will always execute due to the `with` syntax. It looks like this:
```
def rec():
    try:
        rec()
    except RecursionError:
        rec()

rec()
```

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nosy: +hongweipeng

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<https://bugs.python.org/issue37402>
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