Message 289497 - Python tracker

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That's a great feature! Here's a question: what should be CPython's behavior when PYTHONHISTORY is explicitly set to empty? Currently there's an error:

$ PYTHONHISTORY= ./python
Python 3.7.0a0 (master:f6595983e08fe20cf06a2535d74d912c6dbb044f, Mar 12 2017, 19:22:29) 
[GCC 6.3.1 20170306] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
Error in atexit._run_exitfuncs:
FileNotFoundError: [Errno 2] No such file or directory

Maybe it's better to just disable the history functionality in this case?

By the way, seems comments starting from https://github.com/python/cpython/pull/473/files#diff-f34a16518c608b2ca946d3f5ca0a1942R419 should be updated too.