[issue33019] Review usage of environment variables in the stdlib

[Christian Heimes]

Christian Heimes <lists at cheimes.de> added the comment:

External libraries like sqlite may also use env vars. I know for sure OpenSSL uses SSL_CERT_FILE and SSL_CERT_DIR to override default verify locations.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33019>
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