/usr/lib/python2.7/dist-packages/cryptography_vectors/asymmetric/PKCS8/ecc_private_with_rfc5915_ext.pem is in python-cryptography-vectors 0.6.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | -----BEGIN PRIVATE KEY-----
MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgfKBDxcP88OEfI4v6
k8JFIQquWzap0+HHXE7N6DzuvamhRANCAAR7M3jrGYZXDSqbcSAmd0wO+V8Wx49D
jqUVeAbI24rCMk3+mUTTFwwQn0p9nTdf56a1VNl4P9XUM5cbJnqwh5Yl
-----END PRIVATE KEY-----
|