def _warn_pyopenssl():
    """Warn the user against faulty versions of pyOpenSSL."""
    if _opensslversionlist < [0, 15]:  # versions >= 0.15 are fine
        warn(RuntimeWarning(
            "pyOpenSSL {0} may be incompatible with praw if validating"
            "ssl certificates, which is on by default.\nSee https://"
            "github.com/praw/pull/625 for more information".format(
                _opensslversion)
        ))
Warn the user against faulty versions of pyOpenSSL.
rtv/packages/praw/internal.py