ssl: only use the dummy cert hack if using an Apple Python (issue4410) The hack for using certificate store in addition to the provided CAs resides in Apple's OpenSSL. Apple's own Pythons will use it, but other custom built Pythons might use a custom built OpenSSL without that hack and will fail when exposed to the dummy cacert introduced in d7f7f1860f00. There do not seem to be a simple way to check from Python if we are using a patched OpenSSL or if it is an Apple OpenSSL. Instead, check if the Python executable resides in /usr/bin/python* or in /System/Library/Frameworks/Python.framework/ and assume that all Pythons found there will be native Pythons using the patched OpenSSL. Custom built Pythons will not get the benefit of using the CAs from the certificate store.